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Markowitz LE, Drolet M, Lewis RM, Lemieux-Mellouki P, Pérez N, Jit M, Brotherton JM, Ogilvie G, Kreimer AR, Brisson M. Human papillomavirus vaccine effectiveness by number of doses: Updated systematic review of data from national immunization programs. Vaccine 2022; 40:5413-5432. [PMID: 35965239 PMCID: PMC9768820 DOI: 10.1016/j.vaccine.2022.06.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Human papillomavirus (HPV) vaccines were first licensed as a three-dose series. Two doses are now widely recommended in some age groups; there are data suggesting high efficacy with one dose. We updated a systematic literature review of HPV vaccine effectiveness by number of doses in observational studies. METHODS We searched Medline and Embase databases from January 1, 2007, through September 29, 2021. Data were extracted and summarized in a narrative synthesis. We also conducted quality assessments for bias due to selection, information, and confounding. RESULTS Overall, 35 studies were included; all except one were conducted within the context of a recommended three-dose schedule. Evaluations were in countries that used bivalent HPV vaccine (seven), quadrivalent HPV vaccine (27) or both (one). Nine evaluated effectiveness against HPV infection, ten anogenital warts, and 16 cervical abnormalities. All studies were judged to have moderate or serious risk of bias. The biases rated as serious would likely result in lower effectiveness with fewer doses. Investigators attempted to control for or stratify by potentially important variables, such as age at vaccination. Eight studies evaluated impact of buffer periods (lag time) for case counting and 10 evaluated different intervals between doses for two-dose vaccine recipients. Studies that stratified by vaccination age found higher effectiveness with younger age at vaccination, although differences were not all formally tested. Most studies found highest estimates of effectiveness with three doses; significant effectiveness was found among 28/29 studies that evaluated three doses, 19/29 that evaluated two doses, and 18/30 that evaluated one dose. Some studies that adjusted or stratified analyses by age at vaccination found similar effectiveness with three, two and one doses. CONCLUSION Observational studies of HPV vaccine effectiveness have many biases. Studies examining persons vaccinated prior to sexual activity and using methods to reduce sources of bias are needed for valid effectiveness estimates.
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Affiliation(s)
- Lauri E Markowitz
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Mélanie Drolet
- Centre de recherche du CHU de Québec - Université Laval, Axe santé des populations et pratiques optimales en santé, Québec, Canada
| | - Rayleen M Lewis
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA; Synergy America, Inc, Duluth, GA, USA
| | - Philippe Lemieux-Mellouki
- Centre de recherche du CHU de Québec - Université Laval, Axe santé des populations et pratiques optimales en santé, Québec, Canada
| | - Norma Pérez
- Centre de recherche du CHU de Québec - Université Laval, Axe santé des populations et pratiques optimales en santé, Québec, Canada
| | - Mark Jit
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Julia M Brotherton
- Population Health, VCS Foundation, East Melbourne, Victoria, Australia; Melbourne School of Population and Global Health, University of Melbourne, Victoria, Australia
| | - Gina Ogilvie
- University of British Columbia, British Columbia, Canada
| | - Aimée R Kreimer
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Marc Brisson
- Centre de recherche du CHU de Québec - Université Laval, Axe santé des populations et pratiques optimales en santé, Québec, Canada; Département de médecine sociale et préventive, Université Laval, Québec, Canada; Department of Infectious Disease Epidemiology, Imperial College, London, United Kingdom
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152
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Lim AH, Ab Rahman N, Ong SM, Paraja J, Rashid R, Parmar IS, Dahlan SN, Tan ZSS, Bohari I, Peariasamy KM, Sivasampu S. Evaluation of BNT162b2 vaccine effectiveness in Malaysia: test negative case-control study. Vaccine 2022; 40:5675-5682. [PMID: 36030123 PMCID: PMC9399819 DOI: 10.1016/j.vaccine.2022.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/13/2022] [Accepted: 08/15/2022] [Indexed: 12/01/2022]
Abstract
There is a notable lack of vaccine effectiveness studies using test-negative case-controlled approach in low- and middle-income countries which have different logistic, demographic and socio-economic conditions from high-income countries. We aimed to estimate the effectiveness of BNT162b2 vaccine against COVID-19 infection over time, intensive care unit admission, severe or critical disease and death due to COVID-19. This study was conducted in the resident population of Labuan aged ≥18 years who had been tested for SARS-CoV-2 by Reverse-Transcriptase Polymerase Chain Reaction between 1 March 2021 and 31 October 2021. We used a test-negative case-control design where 2644 pairs of cases and controls were matched by age, sex, testing date, nationality and testing reason. Analysis was stratified by age group to estimate age effect (<60 years and ≥60 years). Of 22217 individuals tested by Reverse-Transcriptase Polymerase Chain Reaction, 5100 were positive for SARS-CoV-2 and aged 18 years and above. Overall vaccine effectiveness ≥ 14 days after the second dose was 65.2% (95% CI: 59.8–69.9%) against COVID-19 infection, 92.5% (95% CI: 72.3–98.8%) against intensive care unit admission, and 96.5% (95% CI: 82.3–99.8%) against COVID-19 deaths. Among infected individuals, vaccine effectiveness was 79.2% (95% CI: 42.3–94.1%) in preventing severe or critical disease due to COVID-19. Vaccine effectiveness for ≥60 years was 72.3% (95% CI: 53.4–83.9%) in fully vaccinated individuals, higher than 64.8% (95% CI: 49.3–59.1%) for those <60 years. Two doses of BNT162b2 were highly effective against COVID-19 infection, severe or critical disease, intensive care unit admission and death due to COVID-19. This study addresses a gap in literature on BNT162b2 vaccine effectiveness in low- and middle-income populations and demonstrates the feasibility of such a study design in a resource limited setting while supporting evidence of waning immunity.
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Affiliation(s)
- Audrey Huili Lim
- Institute for Clinical Research, National Institutes of Health, Ministry of Health, Malaysia.
| | - Norazida Ab Rahman
- Institute for Clinical Research, National Institutes of Health, Ministry of Health, Malaysia
| | - Su Miin Ong
- Institute for Clinical Research, National Institutes of Health, Ministry of Health, Malaysia
| | | | - Rahmah Rashid
- Labuan State Health Department, Ministry of Health, Malaysia
| | | | | | | | - Ismuni Bohari
- Labuan State Health Department, Ministry of Health, Malaysia
| | - Kalaiarasu M Peariasamy
- Institute for Clinical Research, National Institutes of Health, Ministry of Health, Malaysia
| | - Sheamini Sivasampu
- Institute for Clinical Research, National Institutes of Health, Ministry of Health, Malaysia
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153
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Yan VKC, Wan EYF, Ye X, Mok AHY, Lai FTT, Chui CSL, Li X, Wong CKH, Li PH, Ma T, Qin S, Wong VKC, Tsang TC, Tsui SH, Chui WCM, Cowling BJ, Leung GM, Lau CS, Wong ICK, Chan EWY. Effectiveness of BNT162b2 and CoronaVac vaccinations against mortality and severe complications after SARS-CoV-2 Omicron BA.2 infection: a case-control study. Emerg Microbes Infect 2022; 11:2304-2314. [PMID: 35980089 PMCID: PMC9553171 DOI: 10.1080/22221751.2022.2114854] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Data regarding protection against mortality and severe complications after Omicron BA.2 infection with CoronaVac and BNT162b2 vaccines remains limited. We conducted a case–control study to evaluate the risk of severe complications and mortality following 1–3 doses of CoronaVac and BNT162b2 using electronic health records database. Cases were adults with their first COVID-19-related mortality or severe complications between 1 January and 31 March 2022, matched with up-to 10 controls by age, sex, index date, and Charlson Comorbidity Index. Vaccine effectiveness against COVID-19-related mortality and severe complications by type and number of doses was estimated using conditional logistic regression adjusted for comorbidities and medications. Vaccine effectiveness (95% CI) against COVID-19-related mortality after two doses of BNT162b2 and CoronaVac were 90.7% (88.6–92.3) and 74.8% (72.5–76.9) in those aged ≥65, 87.6% (81.4–91.8) and 80.7% (72.8–86.3) in those aged 50–64, 86.6% (71.0–93.8) and 82.7% (56.5–93.1) in those aged 18–50. Vaccine effectiveness against severe complications after two doses of BNT162b2 and CoronaVac were 82.1% (74.6–87.3) and 58.9% (50.3–66.1) in those aged ≥65, 83.0% (69.6–90.5) and 67.1% (47.1–79.6) in those aged 50–64, 78.3% (60.8–88.0) and 77.8% (49.6–90.2) in those aged 18–50. Further risk reduction with the third dose was observed especially in those aged ≥65 years, with vaccine effectiveness of 98.0% (96.5–98.9) for BNT162b2 and 95.5% (93.7–96.8) for CoronaVac against mortality, 90.8% (83.4–94.9) and 88.0% (80.8–92.5) against severe complications. Both CoronaVac and BNT162b2 vaccination were effective against COVID-19-related mortality and severe complications amidst the Omicron BA.2 pandemic, and risks decreased further with the third dose.
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Affiliation(s)
- Vincent Ka Chun Yan
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Eric Yuk Fai Wan
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D24H), Hong Kong Science and Technology Park, Hong Kong China.,Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Xuxiao Ye
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Anna Hoi Ying Mok
- Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Francisco Tsz Tsun Lai
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China
| | - Celine Sze Ling Chui
- Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,School of Nursing, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Xue Li
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Carlos King Ho Wong
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Philip Hei Li
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Tiantian Ma
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China
| | - Simon Qin
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China
| | | | - Tat Chi Tsang
- Department of Accident and Emergency, Queen Mary Hospital, Hong Kong China
| | - Sik Hon Tsui
- Department of Accident and Emergency, Queen Mary Hospital, Hong Kong China
| | | | - Benjamin John Cowling
- Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Gabriel Matthew Leung
- Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Chak Sing Lau
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China
| | - Ian Chi Kei Wong
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,Research Department of Practice and Policy, School of Pharmacy, University College London, London, United Kingdom.,Aston Pharmacy School, Aston University, Birmingham, B4 7ET, UK.,Department of Pharmacy, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Esther Wai Yin Chan
- Centre for Safe Medication Practice and research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong China.,Laboratory of Data Discovery for Health (D4H), Hong Kong Science and Technology Park, Hong Kong China.,Department of Pharmacy, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.,The University of Hong Kong Shenzhen Institute of Research and Innovation, Shenzhen, China
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154
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McCormick DW, Konkle SL, Magleby R, Chakrabarti AK, Cherney B, Lindell K, Namageyo-Funa A, Visser S, Soto RA, Donnelly MAP, Stringer G, Austin B, Beatty ME, Stous S, Albanese BA, Chu VT, Chuey M, Dietrich EA, Drobeniuc J, Folster JM, Killerby ME, Lehman JA, McDonald EC, Ruffin J, Schwartz NG, Sheldon SW, Sleweon S, Thornburg NJ, Hughes LJ, Petway M, Tong S, Whaley MJ, Kirking HL, Tate JE, Hsu CH, Matanock A. SARS-CoV-2 infection risk among vaccinated and unvaccinated household members during the Alpha variant surge - Denver, Colorado, and San Diego, California, January-April 2021. Vaccine 2022; 40:4845-4855. [PMID: 35803846 PMCID: PMC9250903 DOI: 10.1016/j.vaccine.2022.06.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND COVID-19 vaccination reduces SARS-CoV-2 infection and transmission. However, evidence is emerging on the degree of protection across variants and in high-transmission settings. To better understand the protection afforded by vaccination specifically in a high-transmission setting, we examined household transmission of SARS-CoV-2 during a period of high community incidence with predominant SARS-CoV-2 B.1.1.7 (Alpha) variant, among vaccinated and unvaccinated contacts. METHODS We conducted a household transmission investigation in San Diego County, California, and Denver, Colorado, during January-April 2021. Households were enrolled if they had at least one person with documented SARS-CoV-2 infection. We collected nasopharyngeal swabs, blood, demographic information, and vaccination history from all consenting household members. We compared infection risks (IRs), RT-PCR cycle threshold values, SARS-CoV-2 culture results, and antibody statuses among vaccinated and unvaccinated household contacts. RESULTS We enrolled 493 individuals from 138 households. The SARS-CoV-2 variant was identified from 121/138 households (88%). The most common variants were Alpha (75/121, 62%) and Epsilon (19/121, 16%). There were no households with discordant lineages among household members. One fully vaccinated secondary case was symptomatic (13%); the other 5 were asymptomatic (87%). Among unvaccinated secondary cases, 105/108 (97%) were symptomatic. Among 127 households with a single primary case, the IR for household contacts was 45% (146/322; 95% Confidence Interval [CI] 40-51%). The observed IR was higher in unvaccinated (130/257, 49%, 95% CI 45-57%) than fully vaccinated contacts (6/26, 23%, 95% CI 11-42%). A lower proportion of households with a fully vaccinated primary case had secondary cases (1/5, 20%) than households with an unvaccinated primary case (66/108, 62%). CONCLUSIONS Although SARS-CoV-2 infections in vaccinated household contacts were reported in this high transmission setting, full vaccination protected against SARS-CoV-2 infection. These findings further support the protective effect of COVID-19 vaccination and highlight the need for ongoing vaccination among eligible persons.
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Affiliation(s)
- David W McCormick
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Stacey L Konkle
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Reed Magleby
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Ayan K Chakrabarti
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Blake Cherney
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Kristine Lindell
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Apophia Namageyo-Funa
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Susanna Visser
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Raymond A Soto
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Marisa A P Donnelly
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Ginger Stringer
- Colorado Department of Public Health and the Environment, Denver, CO, USA
| | - Brett Austin
- County of San Diego Health and Human Services Agency, San Diego, CA, USA
| | - Mark E Beatty
- County of San Diego Health and Human Services Agency, San Diego, CA, USA
| | - Sarah Stous
- County of San Diego Health and Human Services Agency, San Diego, CA, USA
| | | | - Victoria T Chu
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Meagan Chuey
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA; County of San Diego Health and Human Services Agency, San Diego, CA, USA
| | - Elizabeth A Dietrich
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jan Drobeniuc
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jennifer M Folster
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Marie E Killerby
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jennifer A Lehman
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Eric C McDonald
- County of San Diego Health and Human Services Agency, San Diego, CA, USA
| | - Jasmine Ruffin
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Noah G Schwartz
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Sarah W Sheldon
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Sadia Sleweon
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Natalie J Thornburg
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Laura J Hughes
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Marla Petway
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Suxiang Tong
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Melissa J Whaley
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Hannah L Kirking
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jacqueline E Tate
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Christopher H Hsu
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Almea Matanock
- COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, GA, USA
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155
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Malhotra S, Mani K, Lodha R, Bakhshi S, Mathur VP, Gupta P, Kedia S, Sankar MJ, Kumar P, Kumar A, H V, Ahuja V, Sinha S, Guleria R, Dua A, Ahmad S, Upadhyay AD, Sati HC, Mani K, Lokade AK, Devi KP, Johnson RM, Gowthaman K, Kumari M, Singh R, Kalra D, Swetambri, Vasudha, Sharma S, Singh A, Sharma V, Kanswal S, Sharma R, Giri T, Rajput S, Mehra G, Sharma A, Madan D, Singh M, Gupta A, Sharma S, Sachdeva S, Kumar M, Sachin, Singh AK, Gohar N, Kumar R, Kanojia N, Singhania J, Dubey R, Shukla S, G A, Sarkar S, Gupta I, Rai S, Tummala S, Reddy T, Vadodaria V, Sharma A, Gupta A, Vats M, Deori TJ, Jaiswal A, Pandit S. COVID-19 infection, and reinfection, and vaccine effectiveness against symptomatic infection among health care workers in the setting of omicron variant transmission in New Delhi, India. Lancet Reg Health Southeast Asia 2022; 3:100023. [PMID: 35769163 PMCID: PMC9167830 DOI: 10.1016/j.lansea.2022.100023] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background Surge of SARS CoV-2 infections ascribed to omicron variant began in December 2021 in New Delhi. We determined the infection and reinfection density in a cohort of health care workers (HCWs) along with vaccine effectiveness (VE) against symptomatic infection within omicron transmission period (considered from December 01, 2021 to February 25, 2022. Methods This is an observational study from the All India Institute of Medical Sciences, New Delhi. Data were collected telephonically. Person-time at risk was counted from November 30, 2021 till date of infection/ reinfection, or date of interview. Comparison of clinical features and severity was done with previous pandemic periods. VE was estimated using test-negative case-control design [matched pairs (for age and sex)]. Vaccination status was compared and adjusted odds ratios (OR) were computed by conditional logistic regression. VE was estimated as (1-adjusted OR)X100-. Findings 11474 HCWs participated in this study. The mean age was 36⋅2 (±10⋅7) years. Complete vaccination with two doses were reported by 9522 (83%) HCWs [8394 (88%) Covaxin and 1072 Covishield (11%)]. The incidence density of all infections and reinfection during the omicron transmission period was 34⋅8 [95% Confidence Interval (CI): 33⋅5-36⋅2] and 45⋅6 [95% CI: 42⋅9-48⋅5] per 10000 person days respectively. The infection was milder as compared to previous periods. VE was 52⋅5% (95% CI: 3⋅9-76⋅5, p = 0⋅036) for those who were tested within 14-60 days of receiving second dose and beyond this period (61-180 days), modest effect was observed. Interpretation Almost one-fifth of HCWs were infected with SARS CoV-2 during omicron transmission period, with predominant mild spectrum of COVID-19 disease. Waning effects of vaccine protection were noted with increase in time intervals since vaccination. Funding None.
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Affiliation(s)
- Sumit Malhotra
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Kalaivani Mani
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Vijay Prakash Mathur
- Division of Pedodontics and Preventive Dentistry, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
| | - Pooja Gupta
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
| | - Saurabh Kedia
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Mari Jeeva Sankar
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Parmeshwar Kumar
- Department of Hospital Administration, All India Institute of Medical Sciences, New Delhi, India
| | - Arvind Kumar
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Vikas H
- Department of Hospital Administration, All India Institute of Medical Sciences, New Delhi, India
| | - Vineet Ahuja
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Subrata Sinha
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | | | - Aman Dua
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Shafi Ahmad
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Ashish Datt Upadhyay
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Hem Chandra Sati
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Kiruba Mani
- Dr. Rajendra Prasad Centre For Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - Amol Kumar Lokade
- Centre For Dental Education And Research, All India Institute of Medical Sciences, New Delhi, India
| | - K Pavithra Devi
- Centre For Dental Education And Research, All India Institute of Medical Sciences, New Delhi, India
| | - Riya Marie Johnson
- Centre For Dental Education And Research, All India Institute of Medical Sciences, New Delhi, India
| | - Keerthana Gowthaman
- Centre For Dental Education And Research, All India Institute of Medical Sciences, New Delhi, India
| | - Mamta Kumari
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Ritika Singh
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Devanshi Kalra
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Swetambri
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Vasudha
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Shubhangi Sharma
- Department of Medical Oncology, Dr. B.R.A Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Singh
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Vikas Sharma
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Sunita Kanswal
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Rahul Sharma
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Tanika Giri
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Simple Rajput
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Geeta Mehra
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Sharma
- Centralized Core Research Facility, All India Institute of Medical Sciences, New Delhi, India
| | - Divya Madan
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Mukesh Singh
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Anvita Gupta
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Shilpi Sharma
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Surbhi Sachdeva
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Mayank Kumar
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Sachin
- Department of Gastroenterology & Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Ajay Kumar Singh
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Naveen Gohar
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Ramu Kumar
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Nitin Kanojia
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Jyoti Singhania
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Ritu Dubey
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Sakshi Shukla
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Abishek G
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Swarnabha Sarkar
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India
| | - Ishan Gupta
- All India Institute of Medical Sciences, New Delhi, India
| | - Sabin Rai
- All India Institute of Medical Sciences, New Delhi, India
| | | | - Thrisha Reddy
- All India Institute of Medical Sciences, New Delhi, India
| | | | - Ajay Sharma
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Gupta
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Manish Vats
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Trideep Jyoti Deori
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Abhishek Jaiswal
- Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sabitri Pandit
- Medical Device Monitoring Center, Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
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Paternina-Caicedo A, Jit M, Alvis-Guzmán N, Fernández JC, Hernández J, Paz-Wilches JJ, Rojas-Suarez J, Dueñas-Castell C, Alvis-Zakzuk NJ, Smith AD, Hoz-Restrepo FDL. Effectiveness of CoronaVac and BNT162b2 COVID-19 mass vaccination in Colombia: A population-based cohort study. Lancet Reg Health Am 2022; 12:100296. [PMID: 35791428 PMCID: PMC9246705 DOI: 10.1016/j.lana.2022.100296] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Background In February 2021, Colombia began mass vaccination against COVID-19 using mainly BNT162b2 and CoronaVac vaccines. We aimed to estimate vaccine effectiveness (VE) to prevent COVID-19 symptomatic cases, hospitalization, critical care admission, and deaths in a cohort of 796,072 insured subjects older than 40 years in northern Colombia, a setting with a high SARS-CoV-2 transmission. Methods We identified individuals vaccinated between March 1st of 2021 and August 15th of 2021. We included symptomatic cases, hospitalizations, critical care admissions, and deaths in patients with confirmed COVID-19 as main outcomes. We calculated VE for each outcome from the hazard ratio in Cox proportionally hazards regressions (adjusted by age, sex, place of residence, diabetes, human immunodeficiency virus, cancer, hypertension, tuberculosis, neurological diseases, and chronic renal disease), with 95% confidence intervals (CI). Findings A total of 719,735 insured participants of 40 and more years were followed. We found 21,545 laboratory-confirmed symptomatic COVID-19 among unvaccinated population, along with 2874 hospitalizations, 1061 critical care admissions, and 1329 deaths, for a rate of 207.2 per million person-days, 27.1 per million person-days, 10.0 per million person-days, and 12.5 per million person-days, respectively. We found CoronaVac was not effective for any outcome in subjects above 80 years old; but for people 40-79 years of age, we found two doses of CoronaVac reduced hospitalization (33.1%; 95% CI, 14.5-47.7), critical care admission (47.2%; 95% CI, 18.5-65.8), and death (55.7%; 95% CI, 32.5-70.0). We found BNT162b2 was effective for all outcomes in the entire population of subjects above 40 years of age, significantly declining for subjects ≥80 years. Interpretation Two doses of either CoronaVac in population between 40 and 79 years of age, or BNT162b2 among vaccinated above 40 years old significantly reduced deaths of confirmed COVID-19 in a cohort of individuals from Colombia. Vaccine effectiveness for CoronaVac and BNT162b2 declined with increasing age. Funding UK National Institute for Health Research, the European Union's Horizon 2020 research and innovation programme, and the Bill & Melinda Gates Foundation.
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Affiliation(s)
| | - Mark Jit
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Nelson Alvis-Guzmán
- Universidad de Cartagena, Cartagena, Colombia
- Universidad de la Costa - CUC, Barranquilla, Colombia
| | | | | | | | - José Rojas-Suarez
- Universidad de Cartagena, Cartagena, Colombia
- Corporación Universitaria Rafael Núñez, Cartagena, Colombia
| | | | - Nelson J Alvis-Zakzuk
- Universidad de la Costa - CUC, Barranquilla, Colombia
- Universidade de São Paulo, São Paulo, Brazil
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157
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Checkley W, Hossen S, McCollum ED, Pervaiz F, Miele CH, Chavez MA, Moulton LH, Simmons N, Roy AD, Chowdhury NH, Ahmed S, Begum N, Quaiyum A, Santosham M, Baqui AH. Effectiveness of the 10-valent pneumococcal conjugate vaccine on pediatric pneumonia confirmed by ultrasound: a matched case-control study. Respir Res 2022; 23:198. [PMID: 35915495 PMCID: PMC9341060 DOI: 10.1186/s12931-022-02115-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/05/2022] [Indexed: 11/23/2022] Open
Abstract
Background Bangladesh introduced the 10-valent pneumococcal conjugate vaccine (PCV10) for children aged < 1 year in March 2015. Previous vaccine effectiveness (VE) studies for pneumonia have used invasive pneumococcal disease or chest X-rays. None have used ultrasound. We sought to determine the VE of PCV10 against sonographically-confirmed pneumonia in three subdistrict health complexes in Bangladesh. Methods We conducted a matched case–control study between July 2015 and September 2017 in three subdistricts of Sylhet, Bangladesh. Cases were vaccine-eligible children aged 3–35 months with sonographically-confirmed pneumonia, who were matched with two types of controls by age, sex, week of diagnosis, subdistrict health complex (clinic controls) or distance from subdistrict health complex (community controls) and had an illness unlikely due to Streptococcus pneumoniae (clinic controls) or were healthy (community controls). VE was measured using multivariable conditional logistic regression. Results We evaluated 8926 children (average age 13.3 months, 58% boys) with clinical pneumonia by ultrasound; 2470 had pneumonia with consolidations ≥ 1 cm; 1893 pneumonia cases were matched with 4238 clinic controls; and 1832 were matched with 3636 community controls. VE increased with the threshold used for consolidation size on ultrasound: the adjusted VE of ≥ 2 doses vs. non-recipients of PCV10 against pneumonia increased from 15.8% (95% CI 1.6–28.0%) for consolidations ≥ 1 cm to 29.6% (12.8–43.2%) for consolidations ≥ 1.5 cm using clinic controls and from 2.7% (− 14.2–17.2%) to 23.5% (4.4–38.8%) using community controls, respectively. Conclusions PCV10 was effective at reducing sonographically-confirmed pneumonia in children aged 3–35 months of age when compared to unvaccinated children. VE increased with the threshold used for consolidation size on ultrasound in clinic and community controls alike. This study provides evidence that lung ultrasound is a useful alternative to chest X-ray for case–control studies evaluating the effectiveness of vaccines against pneumonia.
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Affiliation(s)
- William Checkley
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, 1830 E. Monument St, Room 555, Baltimore, MD, 21287, USA. .,Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA. .,Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA.
| | - Shakir Hossen
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, 1830 E. Monument St, Room 555, Baltimore, MD, 21287, USA
| | - Eric D McCollum
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA.,Department of Pediatrics, School of Medicine, Johns Hopkins University, Baltimore, USA
| | - Farhan Pervaiz
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, 1830 E. Monument St, Room 555, Baltimore, MD, 21287, USA
| | - Catherine H Miele
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, 1830 E. Monument St, Room 555, Baltimore, MD, 21287, USA
| | - Miguel A Chavez
- Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, 1830 E. Monument St, Room 555, Baltimore, MD, 21287, USA
| | - Lawrence H Moulton
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA.,Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA
| | - Nicole Simmons
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA
| | | | | | | | - Nazma Begum
- Johns Hopkins University -Bangladesh, Dhaka, Bangladesh
| | - Abdul Quaiyum
- Johns Hopkins University -Bangladesh, Dhaka, Bangladesh
| | - Mathuram Santosham
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA.,Department of Pediatrics, School of Medicine, Johns Hopkins University, Baltimore, USA
| | - Abdullah H Baqui
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, USA
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158
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El-Shesheny R, El Taweel A, Gomaa MR, Roshdy WH, Kandeil A, Webby RJ, Kayali G, Ali MA. Induced humoral immunity of different types of vaccines against most common variants of SARS-CoV-2 in Egypt prior to Omicron outbreak. Vaccine 2022; 40:4303-4306. [PMID: 35697574 PMCID: PMC9187864 DOI: 10.1016/j.vaccine.2022.05.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/10/2022] [Accepted: 05/31/2022] [Indexed: 11/10/2022]
Abstract
The diversity of SARS-CoV-2 continues to lead to the emergence of new SARS-CoV-2 variants. SARS-CoV-2 antibody assays are crucial in managing the COVID-19 pandemic by determining the neutralizing antibody response. This study aims to investigate vaccine-induced antibodies against most common variants of SARS-CoV-2 in Egypt. Sera samples were collected from vaccinated participants and neutralizing activity against the SARS-CoV-2 variants was determined using microneutralization assay. Our results show that the BNT162b2 (Pfizer-BioNTech), ChAdOx1 nCov-19 (AstraZeneca), and Ad26.COV2.S COVID-19 (Janssen) vaccines elicited neutralizing antibody responses more than the BBIBP-CorV vaccine (Sinopharm) against B.1, C.36.3, and AY.32 (Delta) variants. While vaccines remain highly effective in managing the COVID-19 pandemic, ongoing monitoring of vaccine effectiveness is needed.
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Affiliation(s)
- Rabeh El-Shesheny
- Centre of Scientific Excellence for Influenza Viruses, Environmental Research Division, National Research Centre, Giza 12622, Egypt.
| | - Ahmed El Taweel
- Centre of Scientific Excellence for Influenza Viruses, Environmental Research Division, National Research Centre, Giza 12622, Egypt.
| | - Mokhtar R Gomaa
- Centre of Scientific Excellence for Influenza Viruses, Environmental Research Division, National Research Centre, Giza 12622, Egypt.
| | - Wael H Roshdy
- Central Public Health Laboratory, Ministry of Health and Population, Cairo, Egypt.
| | - Ahmed Kandeil
- Centre of Scientific Excellence for Influenza Viruses, Environmental Research Division, National Research Centre, Giza 12622, Egypt; Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38107, USA.
| | - Richard J Webby
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38107, USA.
| | | | - Mohamed A Ali
- Centre of Scientific Excellence for Influenza Viruses, Environmental Research Division, National Research Centre, Giza 12622, Egypt.
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159
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Mimura W, Ishiguro C, Fukuda H. Influenza vaccine effectiveness against hospitalization during the 2018/2019 season among older persons aged ≥ 75 years in Japan: The LIFE-VENUS Study. Vaccine 2022:S0264-410X(22)00852-0. [PMID: 35851488 DOI: 10.1016/j.vaccine.2022.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/19/2022] [Accepted: 07/01/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Older persons are recommended to receive annual influenza vaccinations due to their increased susceptibility to influenza infections and related complications. Routine assessments of influenza vaccine effectiveness (IVE) in older persons may help to improve vaccine development and vaccination strategies, but there is a lack of consistent epidemiological data from Japan. This study aimed to evaluate IVE against hospitalization during the 2018/2019 season among older persons aged ≥ 75 years in Japan. METHODS This cohort study was conducted using insurance claims data and vaccination records provided by the Longevity Improvement & Fair Evidence - Vaccine Effectiveness, Networking, and Universal Safety (LIFE-VENUS) Study. The study cohort comprised older persons aged ≥ 75 years residing in an urban municipality in Japan. Vaccinated participants were identified through vaccination records from October 2018 to January 2019, and were matched with unvaccinated participants using a 1:1 ratio. The IVE against hospitalization was calculated as (1-hazard ratio) × 100% while adjusting for covariates such as age, sex, comorbidities, previous vaccinations, and care needs levels. RESULTS We analyzed 30,881 vaccinated participants matched with 30,881 unvaccinated participants. Among these, 587 (1.9%) vaccinated participants and 644 (2.1%) unvaccinated participants were hospitalized during the 2018/2019 season. The adjusted IVE against hospitalization was estimated to be 28.9% (16.6-39.4%). CONCLUSIONS The influenza vaccine for the 2018/2019 season showed moderate effectiveness among older persons in Japan. The LIFE-VENUS Study represents a potential platform for the continued monitoring of IVE among the older Japanese population.
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160
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Xie X, Xie B, Xiong D, Hou M, Zuo J, Wei G, Chevallier J. New theoretical ISM-K2 Bayesian network model for evaluating vaccination effectiveness. J Ambient Intell Humaniz Comput 2022; 14:1-17. [PMID: 35813275 PMCID: PMC9253264 DOI: 10.1007/s12652-022-04199-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/15/2022] [Indexed: 05/30/2023]
Abstract
Aiming at the difficulty in obtaining a complete Bayesian network (BN) structure directly through search-scoring algorithms, authors attempted to incorporate expert judgment and historical data to construct an interpretive structural model with an ISM-K2 algorithm for evaluating vaccination effectiveness (VE). By analyzing the influenza vaccine data provided by Hunan Provincial Center for Disease Control and Prevention, risk factors influencing VE in each link in the process of "Transportation-Storage-Distribution-Inoculation" were systematically investigated. Subsequently, an evaluation index system of VE and an ISM-K2 BN model were developed. Findings include: (1) The comprehensive quality of the staff handling vaccines has a significant impact on VE; (2) Predictive inference and diagnostic reasoning through the ISM-K2 BN model are stable, effective, and highly interpretable, and consequently, the post-production supervision of vaccines is enhanced. The study provides a theoretical basis for evaluating VE and a scientific tool for tracking the responsibility of adverse events of ineffective vaccines, which has the value of promotion in improving VE and reducing the transmission rate of infectious diseases.
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Affiliation(s)
- Xiaoliang Xie
- School of Mathematics and Statistics, Hunan University of Technology and Busin Ess, Changsha, 410205 China
- Key Laboratory of Hunan Province for Statistical Learning and Intelligent Computation, Hunan University of Technology and Business, Changsha, 410205 Hunan China
| | - Bingqi Xie
- School of Mathematics and Statistics, Hunan University of Technology and Busin Ess, Changsha, 410205 China
- Institute of Big Data and Internet Innovation, Hunan University of Technology and Business, Changsha, 410205 China
| | - Dan Xiong
- School of Mathematics and Statistics, Central South University, Changsha, 410083 China
| | - Muzhou Hou
- School of Mathematics and Statistics, Central South University, Changsha, 410083 China
| | - Jinxia Zuo
- School of Mathematics and Statistics, Hunan University of Technology and Busin Ess, Changsha, 410205 China
- Institute of Big Data and Internet Innovation, Hunan University of Technology and Business, Changsha, 410205 China
| | - Guo Wei
- Department of Mathematics and Computer Science, University of North Carolina at Pembroke, Pembroke, NC 28372 USA
| | - Julien Chevallier
- IPAG Business School (IPAG Lab), 184 boulevard Saint-Germain, 75006 Paris, France
- University Paris 8 (LED), 2 rue de la Liberté, 93526 Saint-Denis, France
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161
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Escandell Rico FM, Pérez Fernández L, Maciá Soler L, Requena Puche J. [Effectiveness of influenza vaccine in preventing severe influenza]. J Healthc Qual Res 2022; 37:201-207. [PMID: 35165077 DOI: 10.1016/j.jhqr.2022.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/14/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Influenza is one of the diseases with the greatest epidemiological impact and the greatest relevance in the management of health services. The flu vaccine can have great variability each season, so our objective was to know the effectiveness of the flu vaccine for the 2017/2018 season for the prevention of severe cases of flu in a general acute hospital in 385 beds. MATERIAL AND METHOD Case control study. All hospitalized patients with laboratory confirmed influenza during the 2017/2018 season were included. Those who met the criteria for a severe case of influenza were considered cases. Those that did not meet the severity criteria were considered controls. The factors associated with the development of severe influenza were calculated. RESULTS The effectiveness adjusted by age group and comorbidity was 60.7% (20.5-80.5). The vaccinated and unvaccinated groups were different in terms of age (P<.0381). The highest proportion of cases were concentrated in those over 65 years of age (45.5%). Vaccination status against severe influenza was found to be an independent protective factor (OR=.746; .694-.831). CONCLUSIONS The effectiveness of influenza vaccination provided greater protection against infection and reduced the severity of influenza in hospitalized patients. These findings should be considered to improve vaccination strategies and achieve better vaccination coverage in the population at risk.
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Affiliation(s)
| | - L Pérez Fernández
- Departamento de Salud de Orihuela, Centro de Salud Almoradí, Orihuela, Alicante, España
| | - L Maciá Soler
- Departamento de Enfermería, Universidad de Alicante, Alicante, España
| | - J Requena Puche
- Departamento de Salud de Elda, Hospital General Universitario de Elda, Elda, Alicante, España
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162
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Korves C, Izurieta HS, Smith J, Zwain GM, Powell EI, Balajee A, Ryder KM, Young-Xu Y. Relative effectiveness of booster vs. 2-dose mRNA Covid-19 vaccination in the Veterans Health Administration: Self-controlled risk interval analysis. Vaccine 2022; 40:4742-4747. [PMID: 35773122 PMCID: PMC9212417 DOI: 10.1016/j.vaccine.2022.06.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 11/26/2022]
Abstract
Objective To estimate relative effectiveness of the booster mRNA Covid-19 vaccination versus the 2-dose primary series for both Delta and Omicron variants with self-controlled study design. Methods We used the Veterans Health Administration (VHA) Corporate Data Warehouse to identify U.S. Veterans who received the 2-dose primary mRNA Covid-19 vaccine series and a mRNA Covid-19 booster, and who had a positive SARS-CoV-2 test during the Delta (9/23/2021–11/30/2021) or Omicron (1/1/22–3/19/22) predominant period. Among them, we conducted a self-controlled risk interval (SCRI) analysis to compare odds of SARS-CoV-2 infection during a booster exposure interval versus a control interval. Exposures were a control interval (days 4–6 post-booster vaccination, presumably prior to gain of booster immunity), and booster exposure interval (days 14–16 post-booster vaccination, presumably following gain of booster immunity). Cases had a positive PCR or antigen SARS-CoV-2 test. Separately for Delta and Omicron periods, we used conditional logistic regression to calculate odds ratios (OR) of a positive test for the booster versus control interval and calculated relative effectiveness of booster versus 2-dose primary series as (1-OR)*100. The SCRI approach implicitly controlled for time-fixed confounders. Results We found 42 individuals with a positive SARS-CoV-2 test in the control interval and 14 in the booster exposure interval during the Delta period, and 141 and 70, respectively, in the Omicron period. For the booster versus 2-dose primary series, the odds of infection were 70% (95 %CI: 42%, 84%) lower during the Delta period and 54% (95 %CI: 38%, 66%) lower during Omicron. In sensitivity analyses among those with prior Covid-19 history, and age stratification, ORs were similar to the main analysis. Conclusions Booster vaccination was more effective relative to a 2-dose primary series during the Delta and Omicron predominant periods, and the relative effectiveness was consistent across age groups.
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Affiliation(s)
- Caroline Korves
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA.
| | - Hector S Izurieta
- Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, United States Food and Drug Administration, White Oak, MD USA.
| | - Jeremy Smith
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA.
| | - Gabrielle M Zwain
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA.
| | - Ethan I Powell
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA.
| | - Abirami Balajee
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA.
| | - Kathryn M Ryder
- Veterans Affairs Pacific Island Health Care, Honolulu, HI USA.
| | - Yinong Young-Xu
- White River Junction Veterans Affairs Medical Center, White River Junction, VT USA; Geisel School of Medicine at Dartmouth, Hanover, NH USA.
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163
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Melgar M, Yockey B, Marlow MA. Impact of vaccine effectiveness and coverage on preventing large mumps outbreaks on college campuses: Implications for vaccination strategy. Epidemics 2022; 40:100594. [PMID: 35728505 DOI: 10.1016/j.epidem.2022.100594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 05/01/2022] [Accepted: 06/13/2022] [Indexed: 11/27/2022] Open
Abstract
Recent mumps outbreaks among highly vaccinated populations, including college students, have called into question the vaccine effectiveness (VE) of routine two-dose measles, mumps, and rubella (MMR2) immunization. We aimed to estimate the VE required for a novel vaccination strategy (e.g., MMR booster dose, novel vaccine) to prevent large mumps outbreaks on college campuses. Using mumps college outbreak data reported to the U.S. Centers for Disease Control and Prevention during 2016-2017, we estimated current MMR2 VE using the screening method and implemented a compartmental model of mumps transmission. We performed 2000 outbreak simulations, following introduction of an infectious person to a population of 10,000, over ranges of MMR2 vaccine coverage (VC) and VE (30.0-99.0%). We compared the impact of varying VC and VE on mumps and mumps orchitis case counts and determined VE thresholds that ensured < 5.0% and < 2.0% of the outbreak simulations exceeded 20 and 100 mumps cases. Median estimated MMR2 VE in reported mumps outbreaks was 60.5% and median reported MMR2 VC was 97.5%. Simulated mumps case count was more sensitive to changes in VE than in VC. The opposite was true for simulated mumps orchitis case count, though orchitis case count was small (mean <10 cases across simulations for VE near 60.5% and VC near 97.5%). At 97.5% VC, 73.1% and 78.2% VE were required for < 5.0% and < 2.0% of outbreaks, respectively, to exceed 100 mumps cases. Maintaining 97.5% VC, 82.4% and 85.9% VE were required for < 5.0% and < 2.0% of outbreaks, respectively, to exceed 20 cases. We conclude that maintaining current levels of MMR2 VC, a novel vaccination strategy aimed at reducing mumps transmission must achieve at least 73.1-85.9% VE among young adults to prevent large mumps outbreaks on college campuses.
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Affiliation(s)
- Michael Melgar
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.
| | - Bryan Yockey
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Mariel Asbury Marlow
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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164
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Huang W, Fang Z, Luo S, Lin S, Xu L, Yan B, Yang Y, Liu X, Xia L, Fan X, Lu S. The effect of BCG vaccination and risk factors for latent tuberculosis infection among college freshmen in China. Int J Infect Dis 2022; 122:321-6. [PMID: 35700876 DOI: 10.1016/j.ijid.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES In this study, we aimed to verify whether Bacillus Calmette-Guérin (BCG) can protect first-year college students against Mycobacterium tuberculosis (MTB) infection by the recombinant fusion protein ESAT6-CFP10 skin test (ECST) or the tuberculin skin test (TST). METHODS We conducted a cross-sectional study to assess risk factors for latent tuberculosis infection (LTBI). Vaccine effectiveness of BCG against LTBI, measured by ECST and TST separately, was assessed using multivariable logistic regression. RESULTS A total of 7351 college freshmen accepted ECST, whereas 7228 accepted TST. A total of 263 (3.58%) tested positive with ECST and 581 (8.04%) tested positive with TST. BCG was significantly associated with LTBI (ECST: adjusted odds ratio (aOR) = 0.26; 95% CI 0.09 to 0.73; TST: aOR = 0.25; 95% CI 0.13 to 0.49). The BCG protective effect on freshmen living in rural areas (ECST: aOR = 0.16; 95% CI 0.04 to 0.55; TST: aOR = 0.12; 95% CI 0.04 to 0.33) is better than that of freshmen living in cities (ECST: aOR = 0.53; 95% CI 0.07 to 4.03; TST: aOR = 0.44; 95% CI 0.17 to 1.16). CONCLUSIONS Protection against LTBI was strongly associated with BCG vaccination. A novel skin test (ECST) may underestimate the protective effects of BCG in college freshmen. BCG has better protection in areas with a slightly higher incidence of LTBI.
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Nazurdinov A, Azizov Z, Mullojonova M, Sadykova U, Mosina L, Singh S, Suleymonova S, Tishkova F, Videbaek D, Cortese MM, Daniels DS, Burke RM. Impact and effectiveness of monovalent rotavirus vaccine in Tajik children. Vaccine 2022; 40:3705-3712. [PMID: 35581101 DOI: 10.1016/j.vaccine.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/04/2022] [Accepted: 05/05/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND In 2015, Tajikistan became the second country in Central Asia to introduce rotavirus vaccine into its national immunization program. Before vaccine introduction, rotavirus was estimated to cause > 40% of pediatric diarrhea hospitalizations in Tajikistan. We aimed to assess the impact of rotavirus vaccine introduction on rotavirus disease burden and estimate rotavirus vaccine effectiveness (VE). METHODS Using surveillance data from 2013 through 2019, we examined trends in monthly hospital admissions among children < 5 years old, before and after rotavirus vaccine introduction. Poisson regression was used to quantify decreases. VE was estimated using a test-negative case control design, with data from admissions during 2017 - 2019. Immunization records were obtained from clinics. RESULTS Among enrolled children, rotavirus positivity declined from 42% to 25% in the post-vaccine introduction period, a decrease of 41% (95% Confidence Interval [CI]: 36 - 45%). Declines were greatest in children < 12 months of age. Estimated VE of a complete course of rotavirus vaccine was 55% (95% CI: 21 - 73%) among children 5 - 59 months of age and 64% (95% CI: 36 - 80%) among children 5 - 23 months of age. VE point estimates were higher among children receiving both doses of rotavirus vaccine non-concurrently with OPV and among children receiving their first dose of rotavirus vaccine at 4 - 11 months of age, but CIs were wide and overlapping. CONCLUSIONS Our data demonstrate that rotavirus vaccine introduction was associated with a substantial reduction in pediatric rotavirus hospitalization burden in Tajikistan, and that rotavirus vaccination is effective in Tajik children.
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Affiliation(s)
- Anvar Nazurdinov
- State Institution "Republican Center of Immunoprophylaxis", Dushanbe, Tajikistan; Department of Epidemiology of the State Educational Institution "Avicenna Tajik State Medical University", Dushanbe, Tajikistan.
| | - Zafarjon Azizov
- State Institution "Republican Center of Immunoprophylaxis", Dushanbe, Tajikistan
| | - Manija Mullojonova
- Virology Laboratory of Tajik Research Institute of Preventive Medicine, Dushanbe, Tajikistan
| | - Umeda Sadykova
- Tajikistan Country Office, World Health Organization, Dushanbe, Tajikistan
| | - Liudmila Mosina
- Vaccine-preventable Diseases and Immunization, World Health Organization Regional Office for Europe, Copenhagen, Denmark
| | - Simarjit Singh
- Vaccine-preventable Diseases and Immunization, World Health Organization Regional Office for Europe, Copenhagen, Denmark
| | - Sudoba Suleymonova
- State Institution "Republican Center of Immunoprophylaxis", Dushanbe, Tajikistan
| | - Farida Tishkova
- Virology Laboratory of Tajik Research Institute of Preventive Medicine, Dushanbe, Tajikistan
| | - Dovile Videbaek
- Vaccine-preventable Diseases and Immunization, World Health Organization Regional Office for Europe, Copenhagen, Denmark
| | - Margaret M Cortese
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Danni S Daniels
- Vaccine-preventable Diseases and Immunization, World Health Organization Regional Office for Europe, Copenhagen, Denmark; Global Immunization Division, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Rachel M Burke
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Feikin DR, Abu-Raddad LJ, Andrews N, Davies MA, Higdon MM, Orenstein WA, Patel MK. Assessing vaccine effectiveness against severe COVID-19 disease caused by omicron variant. Report from a meeting of the World Health Organization. Vaccine 2022; 40:3516-3527. [PMID: 35595662 PMCID: PMC9058052 DOI: 10.1016/j.vaccine.2022.04.069] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 04/22/2022] [Indexed: 01/13/2023]
Abstract
Vaccine effectiveness is lower and wanes faster against infection and symptomatic disease caused by the omicron variant of SARS-CoV-2 than was observed with previous variants. Vaccine effectiveness against severe omicron disease, on average, is higher, but has shown variability, including rapid apparent waning, in some studies. Assessing vaccine effectiveness against omicron severe disease using hospital admission as a measure of severe disease has become more challenging because of omicron's attenuated intrinsic severity and its high prevalence of infection. Many hospital admissions likely occur among people with incidental omicron infection or among those with infection-induced exacerbation of chronic medical conditions. To address this challenge, the World Health Organization held a virtual meeting on March 15, 2022, to review evidence from several studies that assessed Covid-19 vaccine effectiveness against severe omicron disease using several outcome definitions. Data was shown from studies in South Africa, the United States, the United Kingdom and Qatar. Several approaches were proposed that better characterize vaccine protection against severe Covid-19 disease caused by the omicron variant than using hospitalization of omicron-infected persons to define severe disease. Using more specific definitions for severe respiratory Covid-19 disease, such as indicators of respiratory distress (e.g. oxygen requirement, mechanical ventilation, and ICU admission), showed higher vaccine effectiveness than against hospital admission. Second, vaccine effectiveness against progression from omicron infection to hospitalization, or severe disease, also showed higher vaccine protection. These approaches might better characterize vaccine performance against severe Covid-19 disease caused by omicron, as well as future variants that evade humoral immunity, than using hospitalization with omicron infection as an indicator of severe disease.
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Affiliation(s)
- Daniel R. Feikin
- Department of Immunizations, Vaccines and Biologicals, World Health Organization, 20 Avenue Appia, 1211 Geneva, Switzerland,Corresponding author.
| | - Laith J. Abu-Raddad
- Infectious Disease Epidemiology Group, Weill Cornell Medicine–Qatar, Cornell University, Doha, Qatar
| | | | - Mary-Ann Davies
- Health Intelligence, Western Cape Government Health, South Africa; Division of Public Health Medicine, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, South Africa
| | - Melissa M. Higdon
- International Vaccine Access Center, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | | | - Minal K. Patel
- Department of Immunizations, Vaccines and Biologicals, World Health Organization, 20 Avenue Appia, 1211 Geneva, Switzerland
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167
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Lin KY, Wu PY, Liu WD, Sun HY, Hsieh SM, Sheng WH, Huang YS, Hung CC, Chang SC. Effectiveness of COVID-19 vaccination among people living with HIV during a COVID-19 outbreak. J Microbiol Immunol Infect 2022; 55:535-539. [PMID: 35577735 PMCID: PMC9069984 DOI: 10.1016/j.jmii.2022.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/24/2022] [Accepted: 04/16/2022] [Indexed: 11/18/2022]
Abstract
COVID-19 vaccination is recommended for at-risk populations, but the vaccine effectiveness in people living with HIV (PLWH) remains incompletely understood. Here we demonstrate that COVID-19 vaccination was clinically effective among PLWH during the outbreak setting with a low endemicity of COVID-19 where non-pharmaceutical interventions were strictly implemented.
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Affiliation(s)
- Kuan-Yin Lin
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan; Center of Infection Control, National Taiwan University Hospital, Taipei, Taiwan
| | - Pei-Ying Wu
- Center of Infection Control, National Taiwan University Hospital, Taipei, Taiwan
| | - Wang-Da Liu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan; Department of Medicine, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Hsin-Yun Sun
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Szu-Min Hsieh
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wang-Huei Sheng
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yu-Shan Huang
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chien-Ching Hung
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan; Department of Tropical Medicine and Parasitology, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan; China Medical University, Taichung, Taiwan.
| | - Shan-Chwen Chang
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Chadeau-Hyam M, Eales O, Bodinier B, Wang H, Haw D, Whitaker M, Elliott J, Walters CE, Jonnerby J, Atchison C, Diggle PJ, Page AJ, Ashby D, Barclay W, Taylor G, Cooke G, Ward H, Darzi A, Donnelly CA, Elliott P. Breakthrough SARS-CoV-2 infections in double and triple vaccinated adults and single dose vaccine effectiveness among children in Autumn 2021 in England: REACT-1 study. EClinicalMedicine 2022; 48:101419. [PMID: 35572721 PMCID: PMC9076030 DOI: 10.1016/j.eclinm.2022.101419] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/15/2022] [Accepted: 04/08/2022] [Indexed: 11/24/2022] Open
Abstract
Background Prevalence of SARS-CoV-2 infection with Delta variant was increasing in England in late summer 2021 among children aged 5 to 17 years, and adults who had received two vaccine doses. In September 2021, a third (booster) dose was offered to vaccinated adults aged 50 years and over, vulnerable adults and healthcare/care-home workers, and a single vaccine dose already offered to 16 and 17 year-olds was extended to children aged 12 to 15 years. Methods SARS-CoV-2 community prevalence in England was available from self-administered throat and nose swabs using reverse transcriptase polymerase chain reaction (RT-PCR) in round 13 (24 June to 12 July 2021, N = 98,233), round 14 (9 to 27 September 2021, N = 100,527) and round 15 (19 October to 5 November 2021, N = 100,112) from the REACT-1 study randomised community surveys. Linking to National Health Service (NHS) vaccination data for consenting participants, we estimated vaccine effectiveness in children aged 12 to 17 years and compared swab-positivity rates in adults who received a third dose with those who received two doses. Findings Weighted SARS-CoV-2 prevalence was 1.57% (1.48%, 1.66%) in round 15 compared with 0.83% (0.76%, 0.89%) in round 14, and the previously observed link between infections and hospitalisations and deaths had weakened. Vaccine effectiveness against infection in children aged 12 to 17 years was estimated (round 15) at 64.0% (50.9%, 70.6%) and 67.7% (53.8%, 77.5%) for symptomatic infections. Adults who received a third vaccine dose were less likely to test positive compared to those who received two doses, with adjusted OR of 0.36 (0.25, 0.53). Interpretation Vaccination of children aged 12 to 17 years and third (booster) doses in adults were effective at reducing infection risk. High rates of vaccination, including booster doses, are a key part of the strategy to reduce infection rates in the community. Funding Department of Health and Social Care, England.
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Affiliation(s)
- Marc Chadeau-Hyam
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, UK
| | - Oliver Eales
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
| | - Barbara Bodinier
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, UK
| | - Haowei Wang
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
| | - David Haw
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
| | - Matthew Whitaker
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, UK
| | - Joshua Elliott
- Department of Infectious Disease, Imperial College London, UK
- Imperial College Healthcare NHS Trust, UK
| | - Caroline E. Walters
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
| | - Jakob Jonnerby
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- National Heart and Lung Institute, Imperial College Healthcare NHS Trust, UK
| | - Christina Atchison
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- Imperial College Healthcare NHS Trust, UK
| | - Peter J. Diggle
- CHICAS, Lancaster Medical School, UK and Health Data Research, Lancaster University, UK
| | | | - Deborah Ashby
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
| | - Wendy Barclay
- Department of Infectious Disease, Imperial College London, UK
| | - Graham Taylor
- Department of Infectious Disease, Imperial College London, UK
| | - Graham Cooke
- Department of Infectious Disease, Imperial College London, UK
- Imperial College Healthcare NHS Trust, UK
- National Institute for Health Research Imperial Biomedical Research Centre, UK
| | - Helen Ward
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
- Imperial College Healthcare NHS Trust, UK
- National Institute for Health Research Imperial Biomedical Research Centre, UK
| | - Ara Darzi
- Imperial College Healthcare NHS Trust, UK
- National Institute for Health Research Imperial Biomedical Research Centre, UK
- Institute of Global Health Innovation, Imperial College London, UK
| | - Christl A. Donnelly
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Global infectious Disease Analysis and Jameel Institute, Imperial College London, UK
- Department of Statistics, University of Oxford, UK
| | - Paul Elliott
- School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, UK
- Imperial College Healthcare NHS Trust, UK
- National Institute for Health Research Imperial Biomedical Research Centre, UK
- Health Data Research (HDR) UK, Imperial College London, UK
- UK Dementia Research Institute, Imperial College London, UK
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169
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Pramod S, Govindan D, Ramasubramani P, Kar SS, Aggarwal R. Effectiveness of Covishield vaccine in preventing Covid-19 - A test-negative case-control study. Vaccine 2022; 40:3294-3297. [PMID: 35168838 PMCID: PMC8825308 DOI: 10.1016/j.vaccine.2022.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 01/09/2022] [Accepted: 02/02/2022] [Indexed: 01/17/2023]
Abstract
INTRODUCTION This study aimed at assessing the vaccine effectiveness (VE) of Covishield, which is identical to AstraZeneca vaccine, in preventing laboratory-confirmed Covid-19. METHODS Using test-negative case-control design, information on vaccination status of cases with Covid-19 among healthcare workers in our institution in Puducherry, India, and an equal number of controls matched for age and date of testing, was obtained. The groups were compared using multivariable conditional logistic regression to calculate odds ratios (OR). VE was calculated as 100*(1-adjusted odds ratio)%. RESULTS Using data from 360 case-control pairs, VE of one dose and of two doses, in providing protection against Covid-19 was 49% (95% CI: 17%-68%) and 54% (27%-71%), respectively. Among cases with moderately severe disease that required oxygen therapy, VE following any number of vaccine doses was 95% (44%-100%). CONCLUSION Covishield vaccine protected significantly against Covid-19, with a higher protection rate against severe forms of disease.
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170
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Zeng B, Gao L, Zhou Q, Yu K, Sun F. Effectiveness of COVID-19 vaccines against SARS-CoV-2 variants of concern: a systematic review and meta-analysis. BMC Med 2022; 20:200. [PMID: 35606843 PMCID: PMC9126103 DOI: 10.1186/s12916-022-02397-y] [Citation(s) in RCA: 120] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 05/09/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND It was urgent and necessary to synthesize the evidence for vaccine effectiveness (VE) against SARS-CoV-2 variants of concern (VOC). We conducted a systematic review and meta-analysis to provide a comprehensive overview of the effectiveness profile of COVID-19 vaccines against VOC. METHODS Published randomized controlled trials (RCTs), cohort studies, and case-control studies that evaluated the VE against VOC (Alpha, Beta, Gamma, Delta, or Omicron) were searched until 4 March 2022. Pooled estimates and 95% confidence intervals (CIs) were calculated using random-effects meta-analysis. VE was defined as (1-estimate). RESULTS Eleven RCTs (161,388 participants), 20 cohort studies (52,782,321 participants), and 26 case-control studies (2,584,732 cases) were included. Eleven COVID-19 vaccines (mRNA-1273, BNT162b2, ChAdOx1, Ad26.COV2.S, NVX-CoV2373, BBV152, CoronaVac, BBIBP-CorV, SCB-2019, CVnCoV, and HB02) were included in this analysis. Full vaccination was effective against Alpha, Beta, Gamma, Delta, and Omicron variants, with VE of 88.0% (95% CI, 83.0-91.5), 73.0% (95% CI, 64.3-79.5), 63.0% (95% CI, 47.9-73.7), 77.8% (95% CI, 72.7-82.0), and 55.9% (95% CI, 40.9-67.0), respectively. Booster vaccination was more effective against Delta and Omicron variants, with VE of 95.5% (95% CI, 94.2-96.5) and 80.8% (95% CI, 58.6-91.1), respectively. mRNA vaccines (mRNA-1273/BNT162b2) seemed to have higher VE against VOC over others; significant interactions (pinteraction < 0.10) were observed between VE and vaccine type (mRNA vaccines vs. not mRNA vaccines). CONCLUSIONS Full vaccination of COVID-19 vaccines is highly effective against Alpha variant, and moderate effective against Beta, Gamma, and Delta variants. Booster vaccination is more effective against Delta and Omicron variants. mRNA vaccines seem to have higher VE against Alpha, Beta, Gamma, and Delta variants over others.
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Affiliation(s)
- Baoqi Zeng
- Department of Science and Education, Peking University Binhai Hospital, Tianjin, China
| | - Le Gao
- Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong, China
| | - Qingxin Zhou
- Tianjin Centers for Disease Control and Prevention, Tianjin, China
| | - Kai Yu
- Department of Science and Education, Peking University Binhai Hospital, Tianjin, China.
| | - Feng Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Centre, Beijing, China.
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171
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Fano V, Coviello E, Consonni D, Agresta A, Orsini N, Crielesi A, Miglietta AS, Pasqua C, Vairo F, Vivaldi F, De Angelis G, Colaiocco G, Fabiani M. COVID-19 vaccines coverage and effectiveness against SARS-CoV-2 infection among residents in the largest Health Authority of Lazio region (Italy): a population-based cohort study. Expert Rev Vaccines 2022; 21:1147-1157. [PMID: 35584901 DOI: 10.1080/14760584.2022.2080057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The waning of the protective effect of COVID-19 vaccines and timing of booster doses are debated. METHODS Population-based cohort study in the largest Health Authority of Lazio region, Italy, on 946,156 residents aged 12+ (study period: January 1, 2021-January 10, 2022). Vaccine Effectiveness (VE) against any SARS-CoV-2 infection (symptomatic or asymptomatic) was estimated through multivariable negative binomial models using unvaccinated person-time as reference. RESULTS The primary vaccination cycle was completed by 81% of residents; of these, 45% received a booster dose. Vaccine coverages were lower for foreigners, deprived areas, families with children aged 0-11, and households of size 1 or 6+. Overall, VE waned from 71% (95% Confidence Interval (CI) 70-73%) 1 month after the second dose to 43% (CI 41-45%) after 4 months and 24% (CI 21-27%) after 6 months, especially in the elderly aged 70+. We observed a prompt restore of VE 15-19 days after the booster dose (69%, CI 67-70%). CONCLUSIONS Our results showed effectiveness of a booster dose four months after completion of the primary cycle, and support the recommendation of prioritizing elderly and fragile individuals. The lower vaccine coverage among social disadvantaged subgroups suggests the need of targeted communication and interventions.
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Affiliation(s)
| | | | - Dario Consonni
- Epidemiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Alessandro Agresta
- Regional Service for Epidemiology, Surveillance and Control of Infectious Diseases, Lazio Region, Italy
| | - Nicola Orsini
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | | | | | | | - Francesco Vairo
- Regional Service for Epidemiology, Surveillance and Control of Infectious Diseases, Lazio Region, Italy
| | | | | | | | - Massimo Fabiani
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
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172
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Ssentongo P, Ssentongo AE, Voleti N, Groff D, Sun A, Ba DM, Nunez J, Parent LJ, Chinchilli VM, Paules CI. SARS-CoV-2 vaccine effectiveness against infection, symptomatic and severe COVID-19: a systematic review and meta-analysis. BMC Infect Dis 2022; 22:439. [PMID: 35525973 PMCID: PMC9077344 DOI: 10.1186/s12879-022-07418-y] [Citation(s) in RCA: 119] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/26/2022] [Indexed: 12/02/2022] Open
Abstract
Background The temporal evolution of SARS-CoV-2 vaccine efficacy and effectiveness (VE) against infection, symptomatic, and severe COVID-19 is incompletely defined. The temporal evolution of VE could be dependent on age, vaccine types, variants of the virus, and geographic region. We aimed to conduct a systematic review and meta-analysis of the duration of VE against SARS-CoV-2 infection, symptomatic COVID-19 and severe COVID-19.
Methods MEDLINE, Scopus, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, the World Health Organization Global Literature on Coronavirus Disease, and CoronaCentral databases were searched and studies were selected. Independent reviewers selected randomized controlled trials and cohort studies with the outcome of interest. Independent reviewers extracted data, and assessed the risk of bias. Meta-analysis was performed with the DerSimonian-Laird random-effects model with Hartung-Knapp-Sidik-Jonkman variance correction. The GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach was used to assess certainty (quality) of the evidence. Primary outcomes included VE as a function of time against SARS-CoV-2 infection, symptomatic and severe COVID-19. Results Eighteen studies were included representing nearly 7 million individuals. VE against all SARS-CoV-2 infections declined from 83% in the first month after completion of the original vaccination series to 22% at 5 months or longer. Similarly, VE against symptomatic COVID-19 declined from 94% in the first month after vaccination to 64% by the fourth month. VE against severe COVID-19 for all ages was high overall, with the level being 90% (95% CI, 87–92%) at five months or longer after being fully vaccinated. VE against severe COVID-19 was lower in individuals ≥ 65 years and those who received Ad26.COV2.S. Conclusions VE against SARS-CoV-2 infection and symptomatic COVID-19 waned over time but protection remained high against severe COVID-19. These data can be used to inform public health decisions around the need for booster vaccination. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07418-y.
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Affiliation(s)
- Paddy Ssentongo
- Department of Public Health Sciences, Penn State College of Medicine and Milton S. Hershey Medical Center, 90 Hope Drive, Suite 2404L, Hershey, PA, 17033, USA. .,Department of Medicine, Penn State College of Medicine and Milton S. Hershey Medical Center, Hershey, PA, USA.
| | - Anna E Ssentongo
- Department of Public Health Sciences, Penn State College of Medicine and Milton S. Hershey Medical Center, 90 Hope Drive, Suite 2404L, Hershey, PA, 17033, USA.,Department of Surgery, Penn State College of Medicine and Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Navya Voleti
- Department of Medicine, Penn State College of Medicine and Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Destin Groff
- Penn State College of Medicine, Hershey, PA, USA
| | - Ashley Sun
- Penn State College of Medicine, Hershey, PA, USA
| | - Djibril M Ba
- Department of Public Health Sciences, Penn State College of Medicine and Milton S. Hershey Medical Center, 90 Hope Drive, Suite 2404L, Hershey, PA, 17033, USA
| | - Jonathan Nunez
- Division of Infectious Diseases and Epidemiology, Department of Medicine, Penn State Hershey College of Medicine and Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Leslie J Parent
- Division of Infectious Diseases and Epidemiology, Departments of Medicine and Microbiology and Immunology, Penn State College of Medicine, Hershey, PA, USA
| | - Vernon M Chinchilli
- Department of Public Health Sciences, Penn State College of Medicine and Milton S. Hershey Medical Center, 90 Hope Drive, Suite 2404L, Hershey, PA, 17033, USA
| | - Catharine I Paules
- Division of Infectious Diseases and Epidemiology, Department of Medicine, Penn State Hershey College of Medicine and Milton S. Hershey Medical Center, Hershey, PA, USA
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Ricketson LJ, Bettinger JA, Sadarangani M, Halperin SA, Kellner JD. Vaccine effectiveness of the 7-valent and 13-valent pneumococcal conjugate vaccines in Canada: An IMPACT study. Vaccine 2022; 40:2733-2740. [PMID: 35351324 DOI: 10.1016/j.vaccine.2022.03.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/18/2022] [Accepted: 03/20/2022] [Indexed: 11/26/2022]
Abstract
We used an indirect cohort analysis in children under 5 years-old from 2002 to 2018 to examine vaccine effectiveness (VE) of the 7-valent pneumococcal conjugate vaccine (PCV) (3 + 1 doses in most regions) and the 13-valent PCV (2 + 1 doses in all regions) against invasive pneumococcal disease (IPD) caused by vaccine serotypes in children in Canada. Cases were identified from the Canadian Immunization Monitoring Program ACTive (IMPACT), a national active surveillance network of 12 tertiary care pediatric hospitals that represent about 90% of tertiary care hospital beds in Canada. There were 1477 children evaluated for PCV7 VE and 489 for PCV13 VE. PCV7 VE in children with vaccination up to date for their age was 96% (95% CI: 67-99%) after a single dose and 95% (95% CI: 92-97%) after ≥2 doses. The VE was 91% (95% CI: 85-94%) in children who had received doses but were not up to date for their age. PCV13 VE in children with vaccinations up to date for their age was 55% (95% CI: 28-72%) after ≥2 doses. The PCV13-vaccine serotypes causing breakthrough IPD in children up to date for their age with 2+ doses of PCV13 were 3 (13/27, 48.2%),19A (11/27, 40.7%), and 19F (3/27, 11.1%). When serotype 3 and 19A were excluded, the VE of PCV13 against the remaining vaccine serotypes was 89% (95% CI: 64-97%) in children with ≥2 doses. The lower VE of PCV13 may be due to lower effectiveness against serotypes 3 and 19A, which could be influenced by the change in dosing schedule from 4 to 3 total doses with the introduction of PCV13, combined with vaccine uptake of 80%. However, PCV13 still provides the benefit of protection against more serotypes than PCV7, and good VE against all serotypes except 3 and 19A.
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Affiliation(s)
- Leah J Ricketson
- Department of Pediatrics, University of Calgary, Calgary, AB, Canada
| | - Julie A Bettinger
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, BC, Canada; Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Manish Sadarangani
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, BC, Canada; Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Scott A Halperin
- Canadian Centre for Vaccinology, Halifax, NS, Canada; Dalhousie University and the IWK Health Centre Dalhousie University, Halifax, NS, Canada
| | - James D Kellner
- Department of Pediatrics, University of Calgary, Calgary, AB, Canada; Alberta Children's Hospital, Calgary Zone, Alberta Health Services, Calgary, AB, Canada.
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174
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Braeye T, Catteau L, Brondeel R, van Loenhout JAF, Proesmans K, Cornelissen L, Van Oyen H, Stouten V, Hubin P, Billuart M, Djiena A, Mahieu R, Hammami N, Van Cauteren D, Wyndham-Thomas C. Vaccine effectiveness against onward transmission of SARS-CoV2-infection by variant of concern and time since vaccination, Belgian contact tracing, 2021. Vaccine 2022; 40:3027-3037. [PMID: 35459558 PMCID: PMC9001203 DOI: 10.1016/j.vaccine.2022.04.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND During the first half of 2021, we observed high vaccine effectiveness (VE) against SARS-CoV2-infection. The replacement of the alpha-'variant of concern' (VOC) by the delta-VOC and uncertainty about the time course of immunity called for a re-assessment. METHODS We estimated VE against transmission of infection (VET) from Belgian contact tracing data for high-risk exposure contacts between 26/01/2021 and 14/12/2021 by susceptibility (VEs) and infectiousness of breakthrough cases (VEi) for a complete schedule of Ad26.COV2.S, ChAdOx1, BNT162b2, mRNA-1273 as well as infection-acquired and hybrid immunity. We used a multilevel Bayesian model and adjusted for personal characteristics (age, sex, household), background exposure, calendar week, VOC and time since immunity conferring-event. FINDINGS VET-estimates were higher for mRNA-vaccines, over 90%, compared to viral vector vaccines: 66% and 80% for Ad26COV2.S and ChAdOx1 respectively (Alpha, 0-50 days after vaccination). Delta was associated with a 40% increase in odds of transmission and a decrease of VEs (72-64%) and especially of VEi (71-46% for BNT162b2). Infection-acquired and hybrid immunity were less affected by Delta. Waning further reduced VET-estimates: from 81% to 63% for BNT162b2 (Delta, 150-200 days after vaccination). We observed lower initial VEi in the age group 65-84 years (32% vs 46% in the age group 45-64 years for BNT162b2) and faster waning. Hybrid immunity waned slower than vaccine-induced immunity. INTERPRETATION VEi and VEs-estimates, while remaining significant, were reduced by Delta and waned over time. We observed faster waning in the oldest age group. We should seek to improve vaccine-induced protection in older persons and those vaccinated with viral-vector vaccines.
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Affiliation(s)
- Toon Braeye
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium.
| | - Lucy Catteau
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Ruben Brondeel
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Joris A F van Loenhout
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Kristiaan Proesmans
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Laura Cornelissen
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Herman Van Oyen
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium; Department of Public Health and Primary Care, Ghent University, Corneel Heymanslaan 10, 9000 Gent, Belgium
| | - Veerle Stouten
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Pierre Hubin
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Matthieu Billuart
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Achille Djiena
- Agence pour une Vie de Qualité, Rue de la Rivelaine 11, 6061 Charleroi, Belgium
| | - Romain Mahieu
- Common Community Commission Brussels, Rue Belliard 71/1, 1040 Brussels, Belgium
| | - Naima Hammami
- Agency for Care and Health, Infection Prevention and Control, Flemish Community, Koningin Maria Hendrikaplein 70 bus 55, 9000 Gent, Belgium
| | - Dieter Van Cauteren
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
| | - Chloé Wyndham-Thomas
- Department of Epidemiology and Public Health, Sciensano, Juliette Wytsmansstraat 14, 1000 Brussel, Belgium
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175
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Tadesse BT, Khanam F, Ahmed F, Im J, Islam MT, Kim DR, Kang SS, Liu X, Chowdhury F, Ahmed T, Aziz AB, Hoque M, Park J, Pak G, Zaman K, Khan AI, Pollard AJ, Kim JH, Marks F, Qadri F, Clemens JD. Prevention of typhoid by Vi conjugate vaccine and achievable improvements in household WASH: Evidence from a cluster-randomized trial in Dhaka, Bangladesh. Clin Infect Dis 2022; 75:1681-1687. [PMID: 35412603 DOI: 10.1093/cid/ciac289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Typhoid fever contributes to approximately 135,000 deaths annually. Achievable improvements in household water-hygiene-sanitation (WASH) combined with vaccination using typhoid conjugate vaccines (TCVs) may be an effective preventive strategy. However, little is known about how improved WASH and vaccination interact to lower the risk of typhoid. METHODS 61,654 urban Bangladeshi children aged 9 months to <16 years, residing in 150 clusters with a baseline population of 205,760 residents, were randomized 1: 1 by cluster to Vi-tetanus toxoid TCV or Japanese Encephalitis (JE) vaccine. Surveillance for blood culture-confirmed typhoid fever was conducted over two years. Existing household WASH status was assessed at baseline as Better or Not Better using previously validated criteria. The reduction in typhoid risk among all residents associated with living in TCV clusters, Better WASH households, or both was evaluated using mixed-effects Poisson regression models. RESULTS The adjusted reduced risk of typhoid among all residents living in the clusters assigned to TCV was 55% (95% confidence interval (CI): 43%,65%; p < 0.001), and that of living in Better WASH households, regardless of cluster, was 37% (95%CI: 24%,48%; p < 0.001). The highest risk of typhoid was observed in persons living in households with Not Better WASH in the JE clusters. In comparison with these persons, those living in households with Better WASH in the TCV clusters had an adjusted reduced risk of 71% (95%CI: 59%, 80%; p < 0.001). CONCLUSION Implementation of TCV programs combined with achievable and culturally acceptable household WASH practices were independently associated with a significant reduction in typhoid risk.
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Affiliation(s)
| | - Farhana Khanam
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Faisal Ahmed
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Justin Im
- International Vaccine Institute, Seoul, Republic of Korea
| | - Md Taufiqul Islam
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Deok Ryun Kim
- International Vaccine Institute, Seoul, Republic of Korea
| | - Sophie Sy Kang
- International Vaccine Institute, Seoul, Republic of Korea
| | - Xinxue Liu
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford, and the NIHR Oxford Biomedical Research Centre, Oxford OX3 9DU, UK
| | - Fahima Chowdhury
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Tasnuva Ahmed
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | | | - Masuma Hoque
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Juyeon Park
- International Vaccine Institute, Seoul, Republic of Korea.,Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK, CB2 0AW
| | - Gideok Pak
- International Vaccine Institute, Seoul, Republic of Korea
| | - Khalequ Zaman
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Ashraful Islam Khan
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Andrew J Pollard
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford, and the NIHR Oxford Biomedical Research Centre, Oxford OX3 9DU, UK
| | - Jerome H Kim
- International Vaccine Institute, Seoul, Republic of Korea
| | - Floriano Marks
- International Vaccine Institute, Seoul, Republic of Korea.,Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK, CB2 0AW.,University of Antananarivo, Antananarivo, Madagascar
| | - Firdausi Qadri
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - John D Clemens
- International Vaccine Institute, Seoul, Republic of Korea.,International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.,UCLA Fielding School of Public Health, Los Angeles, CA 90095-1772, USA
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176
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di Lego V, Sánchez-Romero M, Prskawetz A. The impact of COVID-19 vaccines on the Case Fatality Rate: The importance of monitoring breakthrough infections. Int J Infect Dis 2022; 119:178-83. [PMID: 35398301 DOI: 10.1016/j.ijid.2022.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 03/10/2022] [Accepted: 03/31/2022] [Indexed: 01/12/2023] Open
Abstract
Objectives This study aimed to test the behavior of the case fatality rate (CFR) in a mixed population of vaccinated and unvaccinated individuals by illustrating the role of both the effectiveness of vaccines in preventing deaths and the detection of infections among both the vaccinated (breakthrough infections) and unvaccinated individuals. Methods We simulated three hypothetical CFR scenarios that resulted from a different combination of vaccine effectiveness in preventing deaths and the efforts in detecting infections among both the vaccinated and unvaccinated individuals. Results In the presence of vaccines, the CFR depends not only on the effectiveness of vaccines in preventing deaths but also on the detection of breakthrough infections. As a result, a decline in the CFR may not imply that vaccines are effective in reducing deaths. Likewise, a constant CFR can still mean that vaccines are effective in reducing deaths. Conclusions Unless vaccinated people are also tested for COVID-19 infection, the CFR loses its meaning in tracking the pandemic. This shows that unless efforts are directed at detecting breakthrough infections, it is hard to disentangle the effect of vaccines in reducing deaths from the probability of detecting infections on the CFR.
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177
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Paixao ES, Wong KLM, Alves FJO, de Araújo Oliveira V, Cerqueira-Silva T, Júnior JB, Machado TM, Junior EPP, Boaventura VS, Penna GO, Werneck GL, Rodrigues LC, Pearce N, Barreto ML, Barral-Netto M. CoronaVac vaccine is effective in preventing symptomatic and severe COVID-19 in pregnant women in Brazil: a test-negative case-control study. BMC Med 2022; 20:146. [PMID: 35379250 DOI: 10.1186/s12916-022-02353-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/24/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND More doses of CoronaVac have been administered worldwide than any other COVID-19 vaccine. However, the effectiveness of COVID-19 inactivated vaccines in pregnant women is still unknown. We estimated the vaccine effectiveness (VE) of CoronaVac against symptomatic and severe COVID-19 in pregnant women in Brazil. METHODS We conducted a test-negative design study in all pregnant women aged 18-49 years with COVID-19-related symptoms in Brazil from March 15, 2021, to October 03, 2021, linking records of negative and positive SARS-CoV-2 reverse transcription polymerase chain reaction (RT-PCR) tests to national vaccination records. We also linked records of test-positive cases with notifications of severe, hospitalised or fatal COVID-19. Using logistic regression, we estimated the adjusted odds ratio and VE against symptomatic COVID-19 and against severe COVID-19 by comparing vaccine status in test-negative subjects to test-positive symptomatic cases and severe cases. RESULTS Of the 19,838 tested pregnant women, 7424 (37.4%) tested positive for COVID-19 and 588 (7.9%) had severe disease. Only 83% of pregnant women who received the first dose of CoronaVac completed the vaccination scheme. A single dose of the CoronaVac vaccine was not effective at preventing symptomatic COVID-19. The effectiveness of two doses of CoronaVac was 41% (95% CI 27.1-52.2) against symptomatic COVID-19 and 85% (95% CI 59.5-94.8) against severe COVID-19. CONCLUSIONS A complete regimen of CoronaVac in pregnant women was effective in preventing symptomatic COVID-19 and highly effective against severe illness in a setting that combined high disease burden and marked COVID-19-related maternal deaths.
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178
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Joshi RK, Muralidharan C, Ahuja A, Mukherjee R, Chaurasia S, Manjaly L, Divyanshi, Sahoo A, Gosavi J, Thomas A. Vaccine effectiveness to protect against moderate or severe disease in COVID cases: A prospective cohort study. Med J Armed Forces India 2022; 79:S0377-1237(22)00016-8. [PMID: 35400799 PMCID: PMC8979476 DOI: 10.1016/j.mjafi.2022.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 02/07/2022] [Indexed: 12/20/2022] Open
Abstract
Background This study was carried out to evaluate the effectiveness of partial and full vaccination with ChAdOx1 nCoV-19 (COVISHIELD) to prevent the development of moderate or severe illness among COVID-positive cases. Methods This prospective cohort study was conducted among Armed Forces personnel deployed in Northern India who were found COVID positive during the study period between January and June 2021. Information about the vaccination status, age and comorbidities was collected at the time of diagnosis. Classification of COVID cases as moderate or severe was performed as per criteria given by the Government of India. Individuals were considered partially vaccinated three weeks after one dose and fully vaccinated two weeks after the second dose. Risk ratio and vaccine effectiveness (VE) to prevent moderate or severe disease among COVID cases were calculated. Results A total of 2005 COVID-19 patients were included in our study. Partial vaccination and full vaccination with ChAdOx1 nCoV-19 offered 13% (95% credible interval (CI): -56.8%, 52.8%) and 66.6% (95% CI: 34.9%, 84.6%) protection against progression to moderate/severe illness among COVID-positive individuals. The risk of moderate-severe disease among COVID-positive cases occurring 4-11 weeks after the first dose was also lesser among those who had taken the second dose of vaccine than individuals who have been vaccinated with only one dose. Conclusion Interval between the first and second doses of ChAdOx1 nCoV-19 vaccine should be reduced to 4-6 weeks, as partial vaccination offers lower protection against the development of moderate-severe illness after COVID infection.
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Affiliation(s)
- Rajneesh K. Joshi
- Col AFMS (MR), O/o DGAFMS, A Block, MoD Offices Complex, Africa Avenue, New Delhi, India
| | - C.G. Muralidharan
- ADGMS (Army), O/o DGMS (Army), Defence Office Complex, KG Marg, New Delhi, India
| | - Ankur Ahuja
- Senior Registrar, 92 Base Hospital, C/o 56 APO, India
| | | | | | - Linto Manjaly
- Medical Officer, 4015 Field Hospital, C/o 56 APO, India
| | - Divyanshi
- Medical Officer, 92 Base Hospital, C/o 56 APO, India
| | - A.K. Sahoo
- DADH, HQ 19 Inf Div (Med), C/o 56 APO, India
| | | | - Alok Thomas
- Medical Officer, 439 Field Hospital, C/o 56 APO, India
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179
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Pierobon A, Zotto AD, Antico A, De Antoni ME, Vianello L, Gennari M, Di Caprio A, Russo F, Brambilla G, Saugo M. Outbreak of SARS-CoV-2 B.1.617.2 (delta) variant in a nursing home 28 weeks after two doses of mRNA anti-COVID-19 vaccines: evidence of a waning immunity. Clin Microbiol Infect 2022; 28:614.e5-614.e7. [PMID: 34958917 PMCID: PMC8704894 DOI: 10.1016/j.cmi.2021.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/14/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To describe a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.617.2 (Delta) variant outbreak among residents (n = 69) and health workers (n = 69) of a small nursing home in northeastern Italy, with full vaccination coverage of 91% and 82%, respectively. Evaluation of the anti-Spike IgG titres 28 weeks after the mRNA vaccine booster dose against SARS-CoV-2 infection and severe coronavirus disease 2019 (COVID-19). MATERIALS AND METHODS Sera were collected within 48 hours from the index case; anti-Spike IgG was determined (expressed as WHO binding antibody units (BAU)/mL) through a commercial quantitative assay; SARS-CoV-2 was diagnosed using RT-PCR, and full-genome sequencing was performed for lineage characterization. Residents were grouped according to anti-Spike IgG titres (≤50, 51-1000 and > 1000 BAU/mL) and the resulting protection against infection and severe disease was measured. RESULTS None of the health workers and 14 of the 59 (24%) residents fully vaccinated and without a previous SARS-CoV-2 infection showed anti-Spike IgG ≤50 BAU/mL (one-sided Fisher exact test, p 0.011). Among these residents, a level of anti-Spike IgG ≤50 BAU/mL resulted in a higher risk of SARS-CoV-2 infection (relative risk 1.55, 95% CI 1.17-2.05) and severe COVID-19 (relative risk 5.33, 95% CI 1.83-15.57). CONCLUSION Low levels of SARS-CoV-2 neutralizing anti-Spike IgG in serum 28 weeks after the administration of the second dose parallel the waning of vaccine protection.
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Daniels V, Saxena K, Patterson-Lomba O, Gomez-Lievano A, Saah A, Luxembourg A, Velicer C, Chen YT, Elbasha E. Modeling the health and economic implications of adopting a 1-dose 9-valent human papillomavirus vaccination regimen in a high-income country setting: An analysis in the United Kingdom. Vaccine 2022; 40:2173-2183. [PMID: 35232593 DOI: 10.1016/j.vaccine.2022.02.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/19/2021] [Accepted: 02/18/2022] [Indexed: 02/07/2023]
Abstract
Although no human papillomavirus (HPV) vaccine is indicated for single-dose administration, some observational evidence suggests that a 1-dose regimen might reduce HPV infection risk to that achieved with 2 doses. This study estimated the potential health and economic outcomes associated with switching from a 2-dose HPV vaccination program for girls and boys aged 13-14 years to an off-label 9-valent (9vHPV), 1-dose regimen, accounting for the uncertainty of the effectiveness and durability of a single dose. A dynamic HPV transmission infection and disease model was adapted to the United Kingdom and included a probabilistic sensitivity analysis using estimated distributions for duration of protection of 1-dose and degree of protection of 1 relative to 2 doses. One-way sensitivity analyses of key inputs were performed. Outcomes included additional cancer and disease cases and the difference in net monetary benefit (NMB). The 1-dose program was predicted to result in 81,738 additional HPV-related cancer cases in males and females over 100 years compared to the 2-dose program, ranging from 36,673 to 134,347 additional cases (2.5% and 97.5% quantiles, respectively), and had a 7.8% probability of being cost-effective at the £20,000/quality-adjusted life years willingness-to-pay (WTP) threshold. In one-way sensitivity analyses, the number of additional cancer cases was sensitive to the median of the duration of protection distribution and coverage rates. The differences in NMBs were sensitive to the median of the duration of protection distribution, dose price and discount rate, but not coverage variations. Across sensitivity analyses, the probability of 1 dose being cost-effective vs 2 doses was < 50% at the standard WTP threshold. Adoption of a 1-dose 9vHPV vaccination program resulted in more vaccine-preventable HPV-related cancer and disease cases in males and females, introduced substantial uncertainty in health and economic outcomes, and had a low probability of being cost-effective compared to the 2-dose program.
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Affiliation(s)
- Vincent Daniels
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | - Kunal Saxena
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | | | | | - Alfred Saah
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | - Alain Luxembourg
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | - Christine Velicer
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | - Ya-Ting Chen
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
| | - Elamin Elbasha
- Merck & Co., Inc., 2000 Galloping Hill Rd, Kenilworth, NJ 07033, USA.
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181
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Fano V, Crielesi A, Coviello E, Fabiani M, Salvatore Miglietta A, Colaiocco G, Moretti I, Pasqua C, Vivaldi F, De Angelis G, Cerimele M. Effectiveness of the Comirnaty and the Vaxzevria vaccines in preventing SARS-CoV-2 infection among residents in Lazio region (Italy). Vaccine 2022; 40:2540-2545. [PMID: 35341646 PMCID: PMC8938180 DOI: 10.1016/j.vaccine.2022.02.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 02/12/2022] [Accepted: 02/15/2022] [Indexed: 12/24/2022]
Abstract
We estimated the effectiveness of Comirnaty and Vaxzevria vaccines among 371,423 residents in Lazio Region (Italy) vaccinated since 27/12/2020, and followed until diagnosis of SARS-CoV-2 infection or 25/4/2021, whichever came first. By the end of follow-up most of the Comirnaty-cohort (60%) had received the second dose at recommended time of 21 days (98%), while the Vaxzevria-cohort had received only one dose. Adjusted hazard ratios of SARS-CoV-2 infection at weekly intervals since the first dose were estimated through a Cox regression model using 0–13 days as reference time-interval. An increase in effectiveness with increasing time since administration was observed for Comirnaty (five-weeks = 81%, 95 %CI 71–88%; three-months = 94%, 95 %CI 84–98%). One dose of Vaxzevria showed an effectiveness of 63% (95 %CI 25–82%) after 7 weeks, although further analyses are needed after complete vaccination with two doses. These results could support the ongoing vaccination campaign by reinforcing evidence-based communication aimed at reducing vaccine hesitancy.
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Affiliation(s)
| | | | | | - Massimo Fabiani
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | | | | | - Irene Moretti
- Department of Economics and Law, Sapienza University, Rome, Italy
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Lee GY, Inthasorn P, Laowahutanont P, Lawpoolsri S, Kamolratanakul S, Lungchukiet P, Oh J, Termrungruanglert W, Taechakraichana N, Pitisuttithum P. Long-term effectiveness of human papillomavirus vaccines among adult women: A real-world scenario. Vaccine 2022; 40:1968-1976. [PMID: 35190207 DOI: 10.1016/j.vaccine.2022.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 01/26/2022] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
OBJECTIVE This study aimed to determine the real-world effectiveness of bi- or quadrivalent human papillomavirus (HPV) vaccines in Thai adult women ≥5 years post-vaccination in reducing HPV 16/18-associated low-grade squamous intraepithelial lesions or worse (LSIL+), atypical squamous cells of undetermined significance or worse (ASC-US+), and HPV 16/18 positivity. METHODS A retrospective cohort study was conducted among Thai women aged 20-45 years in Bangkok. The vaccinated and unvaccinated groups were matched according to baseline years. HPV/Pap test results were collected from the medical records and/or obtained by cervical sample collection at the study sites. Adjusted hazard ratios were measured using multivariable Cox regression analyses. RESULTS A total of 993 participants (493 vaccinated and 500 unvaccinated) were enrolled from 2018 to 2019. The median ages at baseline of the vaccinated and unvaccinated groups were 33 years (interquartile range [IQR] 27-38) and 34 years (IQR 30-38), respectively. The median follow-up periods were 7.3 years (IQR 6.1-8.6) and 7.2 years (IQR 5.8-8.9) for the vaccinated group and the unvaccinated group, respectively. More women in the vaccinated group were single (29.2% vs. 13.2%, P < 0.001) and university graduates (83.2% vs. 75.4%, P = 0.009). The vaccinated and unvaccinated groups had similar personal monthly incomes (>20,000 THB/month, 63.9% vs. 62.4%, respectively, P = 0.685). There were no cases of HPV 16/18-associated LSIL+ in the vaccinated group, whereas there were four cases in the unvaccinated group. HPV vaccine effectiveness was 88.0% (95% CI 2.0-98.5) in the reduction of HPV 16/18-associated ASC-US+, and 84.6% (95% CI 43.5-95.8) in the reduction of HPV 16/18 positivity. CONCLUSIONS HPV vaccine effectiveness was high in adult women in a real-world scenario in a developing country. Free HPV vaccination in adult women in this age group should be further explored when vaccine supplies are not limited. (HPV: human papillomavirus. LSIL+: low-grade squamous intraepithelial lesion or worse. ASC-US+: atypical squamous cells of undetermined significance or worse).
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Affiliation(s)
- Ga Young Lee
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, 420/6 Ratchawithi Road, Ratchathewi, Bangkok 10400, Thailand
| | - Perapong Inthasorn
- Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand
| | - Piyawat Laowahutanont
- National Cancer Institute of Thailand, 268/1 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Saranath Lawpoolsri
- Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, 420/6 Ratchawithi Road, Ratchathewi, Bangkok 10400, Thailand
| | - Supitcha Kamolratanakul
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, 420/6 Ratchawithi Road, Ratchathewi, Bangkok 10400, Thailand
| | - Palita Lungchukiet
- Bumrungrad International Hospital, 33 Sukhumvit 3, Wattana, Bangkok 10110, Thailand
| | - Juhwan Oh
- Department of Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Wichai Termrungruanglert
- Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, 1873 Rama VI Road, Pathumwan, Bangkok 10330, Thailand
| | | | - Punnee Pitisuttithum
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, 420/6 Ratchawithi Road, Ratchathewi, Bangkok 10400, Thailand.
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183
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Nittayasoot N, Thammawijaya P, Tharmaphornpilas P, Sansilapin C, Jiraphongsa C, Suphanchaimat R. Rapid method through routine data to evaluate real-world vaccine effectiveness against coronavirus disease 2019 (COVID-19) infection: lessons from Thailand. Health Res Policy Syst 2022; 20:29. [PMID: 35264194 PMCID: PMC8905277 DOI: 10.1186/s12961-022-00821-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Abstract
The objective of this article is to draw lessons from the Thai experience in estimating vaccine effectiveness (VE) for coronavirus disease 2019 (COVID-19) based on routine service data. We found that a matched case–control design, using probability-based controls representing the varying vaccine coverage across the population over time, yielded a valid result for VE assessment. The proposed design has an advantage in its applicability drawing from the routine data monitoring system. Future studies that exercise other designs, such as test-negative and cohort studies, are recommended in order to compare and contrast the findings across different designs. To implement a continuous monitoring system on VE, the integration of data from different sources is needed. This requires long-term investment in the data monitoring system for the entire healthcare system.
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Affiliation(s)
| | - Panithee Thammawijaya
- Department of Disease Control, Ministry of Public Health, Nonthaburi, 11000, Thailand
| | | | - Chalo Sansilapin
- Department of Disease Control, Ministry of Public Health, Nonthaburi, 11000, Thailand
| | | | - Rapeepong Suphanchaimat
- Department of Disease Control, Ministry of Public Health, Nonthaburi, 11000, Thailand. .,International Health Policy Program, Ministry of Public Health, Nonthaburi, 11000, Thailand.
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184
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Bruxvoort KJ, Sy LS, Qian L, Ackerson BK, Luo Y, Lee GS, Tian Y, Florea A, Takhar HS, Tubert JE, Talarico CA, Tseng HF. Real-world effectiveness of the mRNA-1273 vaccine against COVID-19: Interim results from a prospective observational cohort study. Lancet Reg Health Am 2022; 6:100134. [PMID: 34849505 PMCID: PMC8614600 DOI: 10.1016/j.lana.2021.100134] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background Phase 3 trials found mRNA-1273 was highly effective in preventing COVID-19. We conducted a prospective cohort study at Kaiser Permanente Southern California (KPSC) to determine the real-world vaccine effectiveness (VE) of mRNA-1273 in preventing COVID-19 infection and severe disease. Methods For this planned interim analysis, individuals aged ≥18 years receiving 2 doses of mRNA-1273 ≥24 days apart (18/12/2020-31/03/2021) were 1:1 matched to randomly selected unvaccinated individuals by age, sex, and race/ethnicity, with follow-up through 30/06/2021. Outcomes were COVID-19 infection (SARS-CoV-2 positive molecular test or COVID-19 diagnosis code) or severe disease (COVID-19 hospitalization and COVID-19 hospital death). Adjusted hazard ratios (aHR) and confidence intervals (CI) for COVID-19 outcomes comparing vaccinated and unvaccinated individuals were estimated by Cox proportional hazards models accounting for multiple comparisons. Adjusted VE was calculated as (1-aHR)x100. Whole genome sequencing was performed on SARS-CoV-2 positive specimens from the KPSC population. Findings This analysis included 352,878 recipients of 2 doses of mRNA-1273 matched to 352,878 unvaccinated individuals. VE (99·3% CI) against COVID-19 infection was 87·4% (84·8–89·6%). VE against COVID-19 hospitalization and hospital death was 95·8% (90·7–98·1%) and 97·9% (66·9-99·9%), respectively. VE was higher against symptomatic (88·3% [98·3% CI: 86·1–90·2%]) than asymptomatic COVID-19 (72·7% [53·4–84·0%]), but was generally similar across age, sex, and racial/ethnic subgroups. VE among individuals with history of COVID-19 ranged from 8·2–33·6%. The most prevalent variants were Alpha (41·6%), Epsilon (17·5%), Delta (11·5%), and Gamma (9·1%), with Delta increasing to 54·0% of variants by June 2021. Interpretation These interim results provide reassuring evidence of the VE of 2 doses of mRNA-1273 across age, sex, and racial/ethnic subgroups, and against asymptomatic and symptomatic COVID-19, and severe COVID-19 outcomes. Among individuals with history of COVID-19, mRNA-1273 vaccination may offer added protection beyond immunity acquired from prior infection. Longer follow-up is needed to fully evaluate VE of mRNA-1273 against emerging SARS-CoV-2 variants. Funding Moderna Inc.
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Affiliation(s)
- Katia J Bruxvoort
- Kaiser Permanente Southern California, Pasadena, CA, USA.,University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lina S Sy
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | - Lei Qian
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | | | - Yi Luo
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | - Gina S Lee
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | - Yun Tian
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | - Ana Florea
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | | | - Julia E Tubert
- Kaiser Permanente Southern California, Pasadena, CA, USA
| | | | - Hung Fu Tseng
- Kaiser Permanente Southern California, Pasadena, CA, USA.,Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA, USA
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185
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Poukka E, Baum U, Palmu AA, Lehtonen TO, Salo H, Nohynek H, Leino T. Cohort study of Covid-19 vaccine effectiveness among healthcare workers in Finland, December 2020 - October 2021. Vaccine 2022; 40:701-705. [PMID: 34953607 PMCID: PMC8683266 DOI: 10.1016/j.vaccine.2021.12.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/13/2021] [Indexed: 01/25/2023]
Abstract
Recently, Covid-19 vaccine effectiveness has decreased especially against mild disease due to emergence of the Delta variant and waning protection. In this register-based study among healthcare workers in Finland, the vaccine effectiveness of two-dose mRNA vaccine series against SARS-CoV-2 infection decreased from 82% (95% CI 79-85%) 14-90 days after vaccination to 53% (43-62%) after 6 months. Similar trend was observed for other series. Waning was not observed against Covid-19 hospitalization. These results facilitate decision-making of booster doses for healthcare workers.
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Affiliation(s)
- Eero Poukka
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland.
| | - Ulrike Baum
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland.
| | - Arto A Palmu
- Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare (THL), Tampere, Finland
| | - Toni O Lehtonen
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
| | - Heini Salo
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
| | - Hanna Nohynek
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
| | - Tuija Leino
- Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
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186
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Omer I, Rosenberg A, Sefty H, Pando R, Mandelboim M, Mendelson E, Keinan-Boker L, Glatman-Freedman A. Lineage-matched versus mismatched influenza B vaccine effectiveness following seasons of marginal influenza B circulation. Vaccine 2022; 40:880-885. [PMID: 35016804 DOI: 10.1016/j.vaccine.2021.12.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/19/2021] [Accepted: 12/25/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Several countries have recently transitioned from the trivalent inactivated influenza vaccine (TIV) to the quadrivalent inactivated influenza vaccine (QIV) in order to outweigh influenza B vaccine-mismatch. However, few studies thus far evaluated its benefits versus the TIV in a systematic manner. Our objective was to compare the QIV VE with lineage-mismatched TIV VE. METHODS We estimated the 2015-2016, 2017-2018, 2019-2020 end-of season influenza B VE against laboratory-confirmed influenza-like illness (ILI) among community patients, using the test-negative design. VE was estimated for pre-determined age groups and for moving age intervals of 15 years. RESULTS Since 2011-2012 season, alternate seasons in Israel were dominated by influenza B circulation. Compared with the lineage-mismatched TIV used during the 2015-2016 and 2017-2018 seasons, the 2019-2020 QIV showed the highest all-ages VE, with VE estimates of 56.9 (95% CI 30.1 to 73.4), 16.5 (95% CI -22.5 to 43.1) and -25.8 (95% CI -85.3 to 14.6) for the 2019-2020, 2017-2018 and 2015-2016 seasons, respectively. The 2019-2020 VE point estimated were the highest for the 0.5-4, 5-17 and 18-44 years age groups and for more 15-year age intervals as compared to the other seasons. CONCLUSIONS Our results support the rapid transition from the TIV to the QIV.
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Affiliation(s)
- Itay Omer
- School of Public Health, Tel Aviv University Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Alina Rosenberg
- Israel Center for Disease Control, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel
| | - Hanna Sefty
- Israel Center for Disease Control, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel
| | - Rakefet Pando
- Israel Center for Disease Control, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel; Central Virology Laboratory, Sheba Medical Center, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel
| | - Michal Mandelboim
- School of Public Health, Tel Aviv University Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; Central Virology Laboratory, Sheba Medical Center, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel
| | - Ella Mendelson
- School of Public Health, Tel Aviv University Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; Central Virology Laboratory, Sheba Medical Center, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel
| | - Lital Keinan-Boker
- Israel Center for Disease Control, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel; School of Public Health, University of Haifa, Haifa 3498838, Israel
| | - Aharona Glatman-Freedman
- School of Public Health, Tel Aviv University Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; Israel Center for Disease Control, Israel Ministry of Health, Tel Hashomer, Ramat Gan 5265601, Israel.
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187
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Noor R, Shareen S, Billah M. COVID-19 vaccines: their effectiveness against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its emerging variants. Bull Natl Res Cent 2022; 46:96. [PMID: 35431535 PMCID: PMC8991668 DOI: 10.1186/s42269-022-00787-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/31/2022] [Indexed: 05/08/2023]
Abstract
BACKGROUND The world has been suffering from the COVID-19 pandemic (officially declared by WHO in March 2020), caused by the severe acute respiratory β-coronavirus 2 (SARS-CoV-2) since the last week of December 2019. The disease was initially designated as a Public Health Emergency of International Concern on January 30, 2020. In order to protect the health of mass public, an array of research on drugs and vaccines against SARS-CoV-2 has been conducted globally. However, the emerging variants of SARS-CoV-2, i.e., Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1), and Delta (B.1.617.2) variants which evolved in late 2020 and the Omicron variant (B.1.1.529) which emerged in November 2021 along with its subvariant BA.2 which was first identified in India and South Africa in late December 2021, have raised the doubt about the efficiency of the currently used vaccines especially in terms of the consistent potential to produce neutralizing antibodies targeting the viral spike (S) protein. MAIN BODY OF THE ABSTRACT The present review discussed the functional details of major vaccines regarding their efficiency against such variants during the pandemic. Overall, the mRNA vaccines have shown around 94% effectiveness; the adenovector vaccine showed approximately 70% efficacy, whereas Sputnik V vaccines showed around 92% effectiveness; the inactivated whole-virus vaccine CoronaVac/PiCoVacc and BBIBP-CorV showed a varying effectiveness of 65-86% according to the geographic locations; the subunit vaccine NVX-CoV2373 has shown 60-89% effectiveness along with the global regions against the wild-type SARS-CoV-2 strain. However, reduced effectiveness of these vaccines against the SARS-CoV-2 variants was noticed which is suggestive for the further administration of booster dose. SHORT CONCLUSION Maximum variants of SARS-CoV-2 emerged during the second wave of COVID-19; and extensive studies on the viral genomic sequences from all geographical locations around the world have been conducted by an array of groups to assess the possible occurrence of mutations(s) specially within the receptor binding domain of the viral spike (S) protein. Mutational similarities and the new or critical mutations within all variants have been clearly identified so far. The study of effectiveness of the currently used vaccines is also ongoing. The persistence of memory B cell action and the other immune components as well as the administration of booster dose is expected to mitigate the disease.
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Affiliation(s)
- Rashed Noor
- Department of Life Sciences (DLS), School of Environment and Life Sciences (SELS), Independent University, Bangladesh (IUB), Plot 16, Block B, Aftabuddin Ahmed Road, Bashundhara, Dhaka, 1229 Bangladesh
| | - Saadia Shareen
- Department of Life Sciences (DLS), School of Environment and Life Sciences (SELS), Independent University, Bangladesh (IUB), Plot 16, Block B, Aftabuddin Ahmed Road, Bashundhara, Dhaka, 1229 Bangladesh
| | - Muntasir Billah
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065 Australia
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188
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Clemens J, Aziz AB, Tadesse BT, Kang S, Marks F, Kim J. Evaluation of protection by COVID-19 vaccines after deployment in low and lower-middle income countries. EClinicalMedicine 2022; 43:101253. [PMID: 34977517 PMCID: PMC8703050 DOI: 10.1016/j.eclinm.2021.101253] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/02/2021] [Accepted: 12/10/2021] [Indexed: 12/20/2022] Open
Abstract
The availability and use of vaccines for the coronavirus disease 2019 (COVID-19) in low and middle-income countries (L/MICs) lags far behind more affluent countries, and vaccines currently used in L/MICs are predominantly of lower efficacy. As vaccines continue to be rolled out in L/MICs, successful control of COVID-19 by vaccines requires monitoring both of vaccine protection of vaccinees (effectiveness) and of the entire targeted populations, including vaccine herd protection of non-vaccinees (impact). To be of greatest relevance to L/MICs, there is the need to address the distinctive medical and demographic features of populations, health systems, and demography that may greatly affect vaccine performance in these settings. We identified 58 published studies that included 85 evaluations of the effectiveness of different COVID-19 vaccines globally. Only three were done in L/MICs, and no impact studies were identified in these settings. Post-deployment studies of the protection by COVID-19 vaccines rolled out in L/MICs constitute an important but currently neglected global priority.
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Affiliation(s)
- John Clemens
- International Vaccine Institute, Seoul, South Korea
- UCLA Fielding School of Public Health, Los Angeles, United States
| | - Asma Binte Aziz
- International Vaccine Institute, Seoul, South Korea
- Institute of Clinical Medicine, University of Oslo, Norway
| | | | - Sophie Kang
- International Vaccine Institute, Seoul, South Korea
| | - Florian Marks
- International Vaccine Institute, Seoul, South Korea
- University of Cambridge, United Kingdom
- University of Antananarivo, Antananarivo, Madagascar
| | - Jerome Kim
- International Vaccine Institute, Seoul, South Korea
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189
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Saban M, Myers V, Wilf-Miron R. Changes in infectivity, severity and vaccine effectiveness against delta COVID-19 variant ten months into the vaccination program: The Israeli case. Prev Med 2022; 154:106890. [PMID: 34800471 PMCID: PMC8596646 DOI: 10.1016/j.ypmed.2021.106890] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/08/2021] [Accepted: 11/14/2021] [Indexed: 11/30/2022]
Abstract
We present epidemiological data to examine trends in COVID-19 incidence, morbidity and mortality in Israel as well as changes in vaccine effectiveness, and discuss the impact of the delta variant and the third, "booster", vaccine. A retrospective-archive study was conducted from February 27th 2020 to October 16th, 2021. Data were obtained from the Israeli Ministry of Health's open COVID 19 database, including PCR-confirmed cases, number hospitalized - including severe cases, death rate, all by age and vaccination status, case fatality rate and changing effectiveness of the vaccine. After three COVID waves, confirmed cases rose from under 30 new daily cases in mid-June to a high of 11,000 in early September 2021. Severe hospitalized cases and death rates were lower than in previous waves and largely restricted to those not fully vaccinated. In the first three months of the vaccination campaign, non-vaccinated population demonstrated much higher morbidity rates. Four months after vaccination began, this gap was attenuated, with low rates of infection and hospitalization in all groups. The gap was regained following uptake of the third vaccine. Data from the fourth wave show reduced hospitalizations and mortality compared to previous waves and suggest that this may be related to high vaccine coverage. These trends suggest that countries with high vaccination might adopt a more permissive approach towards COVID even in the face of new variants.
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Affiliation(s)
- Mor Saban
- The Gertner Institute for Epidemiology and Health Policy Research, Ramat Gan, Israel.
| | - Vicki Myers
- The Gertner Institute for Epidemiology and Health Policy Research, Ramat Gan, Israel.
| | - Rachel Wilf-Miron
- The Gertner Institute for Epidemiology and Health Policy Research, Ramat Gan, Israel; School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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190
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Lina B. [The different phases of molecular and antigenic evolution of SARS-CoV-2 viruses during the 20 months following its emergence]. Bull Acad Natl Med 2022; 206:87-99. [PMID: 34866635 PMCID: PMC8629187 DOI: 10.1016/j.banm.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 11/04/2021] [Indexed: 01/04/2023]
Abstract
From its emergence in December 2019 and until the end of the fourth pandemic wave in October 2021, SARS-CoV-2 circulation has been associated with significant molecular evolutions of the virus. These were linked to mutations that have led to new virus linages with replication advantages as a result of increased transmission, or partial immune escape in the context of progressively increasing global immunisation. The pandemic context with large scale epidemics massive outbreaks observed in highly populated areas has favoured this emergence of "variants". During the 20 months period, at least three evolutionary phases have been observed, leading to the situation observed in October 2021. For the first time, an unprecedented worldwide surveillance effort has been conducted to monitor the circulation of the emerging virus, with rapid data sharing. This molecular surveillance system has provided an accurate description of the circulating viruses, and their evolution. The implementation of these tools and skills able to provide SARS-CoV-2 molecular epidemiological data has upgraded the global capacity for surveillance worldwide, and may allow us to be better prepared for a future pandemic episode.
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Affiliation(s)
- B. Lina
- Laboratoire de virologie des HCL, institut des agents infectieux (IAI), CNR des virus à transmission respiratoire (dont la grippe), groupement hospitalier Nord, hôpital de la Croix Rousse, 103, grande rue de la Croix Rousse, 69317 Lyon cedex 04, France,Inserm U1111, laboratoire Virpath, CNRS UMR 5308, ENS de Lyon, UCBL, centre international de recherche en infectiologie (CIRI), université de Lyon, 7–11, rue Guillaume-Paradin, 69372 Lyon cedex 08, France
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191
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Fernandes CM, Dias SL, Ferreira MC, Luna EJA. COVID-19 post-vaccination in healthcare workers and vaccine effectiveness, Brazil, 2021. Clinics (Sao Paulo) 2022; 77:100109. [PMID: 36179526 PMCID: PMC9464573 DOI: 10.1016/j.clinsp.2022.100109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/28/2022] [Accepted: 08/29/2022] [Indexed: 12/15/2022] Open
Abstract
OBJECTS This study aimed to describe COVID-19 cases in healthcare workers at a large tertiary hospital, after a vaccination campaign, to understand the individual characteristics, timeliness, symptomatology, and severity of the conditions. METHODS The COVID-19 reporting files from the hospital's healthcare workers and their records in the vaccine registry were analyzed, regarding vaccination status, symptoms, sociodemographic characteristics, comorbidities, and outcomes. Vaccination descriptive analysis was carried out and the impact and effectiveness of vaccination in relation to symptomatic infection and hospitalization were estimated. RESULTS In a total of 696 PCR-confirmed COVID-19 patients, vaccination coverage for the 1st and 2nd dose was 92.8% and 85.5%. Patients with complete doses had a mean interval of 96.8 days between vaccination and the onset of symptoms. Of the 664 participants with available clinical data, 165 had at least 1 comorbidity. During the study, 12 patients were hospitalized, 58.3% with a complete vaccination schedule. Three of this group died. The effectiveness of vaccination for symptomatic cases and hospitalization was 22.1% and 69.0%, respectively. The impact of vaccination on symptomatic cases and hospitalization was 81.4% and 89.7%, respectively. DISCUSSION The majority of COVID-19 cases in the study were classified as mild. The impact of vaccination for confirmed cases was significant, both in reducing the incidence of symptomatic cases and hospitalizations. The presence of comorbidities in approximately ¼ of the patients increased the risk of these individuals. The mean time interval between diagnosis and the 2nd dose of vaccine was longer in the hospitalized group, reinforcing the protective decline over longer periods.
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Affiliation(s)
- Caio Medeiros Fernandes
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil.
| | - Shirley L Dias
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
| | - Maira C Ferreira
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
| | - Expedito J A Luna
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
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192
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Erber W, Khan F, Zavadska D, Freimane Z, Dobler G, Böhmer MM, Jodar L, Schmitt HJ. Effectiveness of TBE vaccination in southern Germany and Latvia. Vaccine 2021; 40:819-825. [PMID: 34952753 DOI: 10.1016/j.vaccine.2021.12.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/21/2021] [Accepted: 12/12/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Tick-borne encephalitis (TBE) is a vaccine-preventable disease which may cause long-term sequelae and even death. The data on the long-term effectiveness of TBE vaccines are limited. Additionally, the vaccination schedule is complex which in part contributes towards sub-optimal uptake in TBE-endemic areas. The current ecological study measures vaccine effectiveness (VE) in two European countries. METHODS TBE VE was measured from 2007 to 2018 in Latvia and Southern German states by age group, vaccination history, and schedule compliance. TBE cases and vaccination history were obtained from the public health agencies for Latvia and the southern German federal states of Bavaria and Baden-Wuerttemberg. Cases were "within schedule" if a TBE infection was diagnosed within the time interval preceding the next scheduled dose and "outside schedule" if the diagnosis occurred after the next scheduled dose. Vaccine uptake was estimated via representative nationwide surveys. RESULTS VE after 2, 3, and ≥4 doses was high in both countries at 97.2%, 95.0%, and 95.4% for southern Germany, and 98.1%, 99.4%, and 98.8% for Latvia while within- schedule, and only showed marginal differences outside schedule at 90.6%, 89.9%, and 95.6% for southern Germany, and 97.4%, 98.4%, and 99.0% for Latvia regardless of age groups. CONCLUSIONS In both countries, VE after two and three primary doses within-schedule was very high in all age groups. Once receiving booster doses, high VE continued to be observed even in persons with extended intervals since the last dose received, suggesting that longer and more flexible booster intervals may be considered for sustainable long-term protection.
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Affiliation(s)
| | | | - Dace Zavadska
- Department of Paediatrics, Riga Stradiņš University, Children's Clinical University Hospital, Riga, Latvia
| | - Zane Freimane
- Department of Paediatrics, Riga Stradiņš University, Children's Clinical University Hospital, Riga, Latvia
| | | | - Merle M Böhmer
- Bavarian Health and Food Safety Authority, Oberschleissheim, Germany; Institute of Social Medicine and Health Systems Research, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
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193
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Tadakuma K, Maruyama T, Mori K, Fujiki N. Effectiveness of seasonal influenza vaccine in adult Japanese workers, 2017-2020. Vaccine 2021; 40:621-626. [PMID: 34952756 DOI: 10.1016/j.vaccine.2021.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Previous studies have not estimated vaccine effectiveness (VE) against influenza in the working-age Japanese population. In this study, we determined VE in adult workers at a Japanese company. METHODS We estimated VE based on self-reported data regarding influenza infections and vaccinations in employees of an auto parts manufacturing company during three influenza seasons from 2017 to 2020. VE was estimated as 100% × [1 - odds ratio (the ratio of the odds of being diagnosed with influenza among enrollees with and without influenza vaccination)]. Odds ratios were estimated using logistic regression. RESULTS We included 11,347 worker records [3,592 (2017-18), 3,663 (2018-19), and 4,092 (2019-20)] from employees who had worked with the company throughout each influenza season. The adjusted VE was moderate and significant in the 2019-20 season (VE = 53%; 95% confidence interval [CI] = 30% to 69%) but low or negative and non-significant during the 2017-18 (VE = 28%; 95% CI = -5% to 50%) and 2018-19 (VE = -11%; 95% CI = - 42% to 14%) seasons. CONCLUSIONS Influenza vaccines were moderately effective during the 2019-20 season but showed low or negative effectiveness during the 2017-18 and 2018-19 seasons. Self-reports from worker records can successfully help determine VE against influenza.
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Affiliation(s)
- Kiyoshi Tadakuma
- Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan.
| | - Takashi Maruyama
- Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Koji Mori
- Occupational Health Practice and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Nobuhiro Fujiki
- Department of Ergonomics, Institute of Industrial and Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
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Luong Ngyen LB, Bauer R, Lesieur Z, Galtier F, Duval X, Vanhems P, Lainé F, Tattevin P, Durier C, Launay O. Vaccine effectiveness against COVID-19 hospitalization in adults in France: A test negative case control study. Infect Dis Now 2021; 52:40-43. [PMID: 34920180 PMCID: PMC8673927 DOI: 10.1016/j.idnow.2021.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/18/2021] [Accepted: 12/08/2021] [Indexed: 11/26/2022]
Abstract
Background Measuring vaccine effectiveness (VE) using real-life data is critical to confirm the effectiveness of licensed vaccine, which could strengthen vaccination adherence. Methods We measured VE against adult COVID-19 hospitalization in five hospitals in France using a test negative design. We compared the odds of vaccinated patients hospitalized with COVID-19 with the odds of vaccinated patients hospitalized for the same symptoms with a negative test. Results A total of 853 patients (463 cases and 390 controls) were included, with a total of 170 patients vaccinated (104 with one dose, 65 with two doses, and one with three doses). There were four cases of breakthrough infections, all in immunocompromised patients. The VE was 84.0% (CI0.95 = [72.6; 90.6]) for one dose and 96.2% (CI0.95 = [86.8; 98.9]) for two doses. Conclusion Our results confirm the high VE of COVID-19 vaccine in France to prevent hospitalizations due to the alpha variant.
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Affiliation(s)
| | | | | | - Florence Galtier
- Inserm, CIC 1411, CHU de Montpellier, Saint-Éloi Hospital, Montpellier, France
| | - Xavier Duval
- Inserm, CIC 1425, AP-HP, Hôpital Bichat, Paris, France
| | - Philippe Vanhems
- Service d'hygiène, épidémiologie, infectiovigilance et prévention, hospices civils de Lyon, Lyon, France
| | | | - Pierre Tattevin
- Services de maladies infectieuses et réanimation médicale, hôpital Pontchaillou, CHU de Rennes, Rennes, France
| | | | - Odile Launay
- Inserm, CIC 1417, Hôpital Cochin, AP-HP, Paris, France; Inserm, F-CRIN I-REIVAC, Paris, France
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195
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Muñoz-Quiles C, López-Lacort M, Díez-Domingo J, Rodrigo-Casares V, Orrico-Sánchez A. Human papillomavirus vaccines effectiveness to prevent genital warts: A population-based study using health system integrated databases, 2009-2017. Vaccine 2021:S0264-410X(21)01536-X. [PMID: 34865874 DOI: 10.1016/j.vaccine.2021.11.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 01/18/2023]
Abstract
OBJECTIVES To assess the effectiveness of the HPV vaccines in preventing genital warts (GW) in women aged 14-23 years and to estimate the incidence of GW in the whole population aged from 14 to 65. DESIGN Population-based retrospective cohort study using real-world data from the Valencia health system Integrated Databases (VID). STUDY POPULATION All subjects aged 14-65 years residing in the Valencia Region during 2009-2017 (n = 4,492,724), including a cohort of 563,240 females aged 14-23 years followed-up for the vaccine effectiveness (VE) estimations. MAIN OUTCOME MEASURES Incident cases of GW defined as the first activation of GW-related codes (ICD-9-CM 078.11 or ICD-10-CM A63.0) in hospital, primary and specialized care during the study period. Adjusted VE was estimated as (1-Relative Risk (RR)) × 100 by a negative binomial Bayesian model. RESULTS There were 23,049 cases of GW in the overall population and 2,565 in the females' cohort 14-23 years old. The incidence rate (IR) (in 100,000 persons-year) was 69.1 (95% CI 68.21-69.99) in the population overall, being higher in men (72.73; 95% CI 71.45-74.04). The IR of GW was 104.08 (95% CI 100.79-108.94) in the cohort of young women. The RR of GW increased with age from 14 to 21 years, reaching a plateau from 21 to 23. The VE of a complete schedule was 74% (95% CrI 68-79) for quadrivalent HPV vaccine (HPV4v). No effectiveness was seen with a full vaccination course with the bivalent HPV vaccine (HPV2v) in girls up to 21 years old. GW IR tends to be higher in unvaccinated cohorts covered by HPV4v vaccine than in unvaccinated cohorts not covered by HPV4v vaccine. CONCLUSIONS A complete HPV4v vaccination schedule was 74% effective in reducing GW in our population. Our results also suggest an indirect protection to unvaccinated and HPV2v vaccinated girls.
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Adabor ES. A statistical analysis of antigenic similarity among influenza A (H3N2) viruses. Heliyon 2021; 7:e08384. [PMID: 34825090 DOI: 10.1016/j.heliyon.2021.e08384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/21/2021] [Accepted: 11/10/2021] [Indexed: 11/20/2022] Open
Abstract
An accurate assessment of antigenic similarity between influenza viruses is important for vaccine strain recommendations and influenza surveillance. Due to the mechanisms that result in frequent changes in the antigenicities of strains, it is desirable to obtain an antigenic similarity measure that accounts for specific changes in strains that are of epidemiological importance in influenza. Empirically grounded statistical models best achieve this. In this study, an interpretable machine-learning model was developed using distinguishing features of antigenic variants to analyze antigenic similarity. The features comprised of cluster information, amino acid sequences located in known antigenic and receptor-binding sites of influenza A (H3N2). In order to assess validity of parameters, accuracy and relevance of model to vaccine effectiveness, the model was applied to influenza A (H3N2) viruses due to their abundant genetic data and epidemiological relevance to influenza surveillance. An application of the model revealed that all model parameters were statistically significant to determining antigenic similarity between strains. Furthermore, upon evaluating the model for predicting antigenic similarity between strains, it achieved 95% area under Receiver Operating Characteristic curve (AUC), 94% accuracy, 76% precision, 97% specificity, 68% sensitivity and a diagnostic odds ratio (DOR) of 83.19. Above all, the model was found to be strongly related to influenza vaccine effectiveness to indicate the correlation between vaccine effectiveness and antigenic similarity between vaccine and circulating strains in an epidemic. The study predicts probabilities of antigenic similarity and estimates changes in strains that lead to antigenic variants. A successful application of the methods presented in this study would complement the global efforts in influenza surveillance.
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197
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Affiliation(s)
- Khitam Muhsen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Dani Cohen
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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198
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Sominina A, Danilenko D, Komissarov A, Pisareva M, Musaeva T, Bakaev M, Afanasieva O, Stolyarov K, Smorodintseva E, Rozhkova E, Obraztsova E, Dondurey E, Guzhov D, Timonina V, Golovacheva E, Kurskaya O, Shestopalov A, Smirnova S, Alimov A, Lioznov D. Age-Specific Etiology of Severe Acute Respiratory Infections and Influenza Vaccine Effectivity in Prevention of Hospitalization in Russia, 2018-2019 Season. J Epidemiol Glob Health 2021. [PMID: 34734387 DOI: 10.1007/s44197-021-00009-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 10/15/2021] [Indexed: 10/26/2022] Open
Abstract
The expansion and standardization of clinical trials, as well as the use of sensitive and specific molecular diagnostics methods, provide new information on the age-specific roles of influenza and other respiratory viruses in development of severe acute respiratory infections (SARI). Here, we present the results of the multicenter hospital-based study aimed to detect age-specific impact of influenza and other respiratory viruses (ORV). The 2018-2019 influenza season in Russia was characterized by co-circulation of influenza A(H1N1)pdm09 and A(H3N2) virus subtypes which were detected among hospitalized patients with SARI in 19.3% and 16.4%, respectively. RSV dominated among ORV (15.1% of total cases and 26.8% in infants aged ≤ 2 years). The most significant SARI agents in intensive care units were RSV and influenza A(H1N1)pdm09 virus, (37.3% and 25.4%, respectively, of PCR-positive cases). Hyperthermia was the most frequently registered symptom for influenza cases. In contrast, hypoxia, decreased blood O2 concentration, and dyspnea were registered more often in RSV, rhinovirus, and metapneumovirus infection in young children. Influenza vaccine effectiveness (IVE) against hospitalization of patients with PCR-confirmed influenza was evaluated using test-negative case-control design. IVE for children and adults was estimated to be 57.0% and 62.0%, respectively. Subtype specific IVE was higher against influenza A(H1N1)pdm09, compared to influenza A(H3N2) (60.3% and 45.8%, respectively). This correlates with delayed antigenic drift of the influenza A(H1N1)pdm09 virus and genetic heterogeneity of the influenza A(H3N2) population. These studies demonstrate the need to improve seasonal influenza prevention and control in all countries as states by the WHO Global Influenza Strategy for 2019-2030 initiative.
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199
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Chard AN, Martinez M, Matanock A, Kassem AM. Estimation of oral poliovirus vaccine effectiveness in Afghanistan, 2010-2020. Vaccine 2021; 39:6250-5. [PMID: 34538696 DOI: 10.1016/j.vaccine.2021.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/13/2021] [Accepted: 09/05/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Afghanistan is one of two countries with endemic wild poliovirus type 1 (WPV1). The oral poliovirus vaccine (OPV) is the predominant vaccine used for polio eradication. Although OPV has been administered in routine childhood immunization and during frequent supplementary immunization activities, WPV1 continues to circulate in Afghanistan and case incidence has been increasing since 2017. We estimated the effectiveness of OPV in Afghanistan during 2010-2020. METHODS We conducted a matched case-control analysis using acute flaccid paralysis (AFP) surveillance data from 29,370 children < 15 years with AFP onset between January 1, 2010 and December 31, 2020. We matched children with confirmed WPV1 (cases) with children with non-polio AFP (controls) by age at onset of paralysis (+/- 3 months), date of onset of paralysis (+/- 3 months), and province of residence, and compared their reported OPV vaccination history to estimate the effectiveness of OPV in preventing paralysis by WPV1 using conditional logistic regression. To account for changes in OPV formulations provided over the analysis period, we stratified the analysis based on dates of the global switch from trivalent OPV (tOPV) to bivalent OPV (bOPV) in April 2016. RESULTS Between January 1, 2010 and December 31, 2020, there were 329 WPV1 cases in Afghanistan. The per-dose estimated effectiveness of OPV against WPV1 was 19% (95% CI: 15%-22%) and of ≥ 7 doses was 94% (95% CI: 90%-97%). Before the global switch from tOPV to bOPV, the per-dose estimated effectiveness of OPV was 14% (95% CI: 11%-18%) and of ≥ 7 doses was 92% (95% CI: 85%-96%). After the switch, the per-dose estimated effectiveness of OPV against WPV1 was 32% (24%-39%) and of ≥ 7 doses was 96% (95% CI: 90%-99%). DISCUSSION OPV is highly effective in preventing paralysis by WPV1; these results indicate that continued WPV1 transmission in Afghanistan is due to failure to vaccinate, not failure of the vaccine. Although difficult to implement in parts of country, improving the administration of OPV in routine immunization and supplementary immunization activities will be critical for achieving polio eradication in Afghanistan.
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Rane MS, Rohani P, Halloran ME. Durability of protection after 5 doses of acellular pertussis vaccine among 5-9 year old children in King County, Washington. Vaccine 2021; 39:6144-6150. [PMID: 34493409 DOI: 10.1016/j.vaccine.2021.08.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE Waning of immunity after vaccination with the acellular Pertussis (aP) vaccine has been proposed as one of the main reasons for pertussis resurgence in the US. In this study, we estimated time-varying vaccine effectiveness after 5 doses of aP vaccine. METHODS We conducted a retrospective cohort study among children 5-9 years old (born between 2008 and 2012) living in King County, Washington, USA, who participated in the Washington State Immunization Information System. We estimated time-varying vaccine effectiveness after 5 doses of aP using smoothed scaled Schoenfeld residuals obtained from fitting Cox proportional hazards models to the data as well as piecewise constant Poisson regression. RESULTS There were 55 pertussis cases in this cohort, of whom 22 (40%) were fully-vaccinated and 33 (60%) were under-vaccinated. Vaccine effectiveness (VE) remained high for up to 42 months after the fifth dose (VE(t) = 89%; 95% CI: 64%, 97%) as estimated using survival analysis methods and up to 4 years (VE(t) = 93%; 95% CI: 67%, 98%) as estimated using Poisson regression. CONCLUSION We did not find evidence for waning of vaccine effectiveness for up to four years after 5 doses of aP among 5 -9 years old children in King County, WA.
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Affiliation(s)
- Madhura S Rane
- Department of Epidemiology, University of Washington, Seattle, WA 98195, USA.
| | - Pejman Rohani
- Odum School of Ecology, University of Georgia, Athens, GA 30602, USA; Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
| | - M Elizabeth Halloran
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Department of Biostatistics, University of Washington, Seattle, WA 98195, USA
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