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Derbie A, Maier M, Amare B, Misgan E, Nibret E, Liebert UG, Woldeamanuel Y, Abebe T. High-risk human papillomavirus genotype distribution among women with gynecology complaints in northwest Ethiopia. Infect Agent Cancer 2023; 18:4. [PMID: 36703179 PMCID: PMC9881258 DOI: 10.1186/s13027-023-00481-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Human papillomavirus (HPV) genotypes differ by geographic location. With the advent of HPV vaccination and HPV-based cervical screening tests in Ethiopia, a nationwide dataset on the genotype distribution of HPV among women has paramount importance in the fight against cervical cancer. However, there is limited data in this regard in the northwest part of the country. Therefore, this study aimed to identify the genotype distribution of high-risk HPVs among women presenting with cervical abnormalities. METHODS A health facility-based cross-sectional study was conducted at Felege Hiwot Comprehensive Specialized Hospital (FHCSH), Bahir Dar-Ethiopia. Women aged ≥ 30 years who visited the hospital gynecology unit from 01 March 2019 to 30 October 2021 were included. Following general and pelvic examinations, a senior gynecologist collected cervical punch biopsies for histopathological examinations and cervical swabs for HR-HPV detection using the Abbott Alinity m system (Abbott Molecular, Des Plaines, IL, USA). Extended genotyping was carried out with the INNO-LiPA HPV Genotyping Extra II assay (INNO-LiPA; Fujirebio Europe, Ghent, Belgium) as per the manufacturer protocols at the Institute of Virology, Leipzig University Hospital, Germany. RESULTS We included 355 women with a mean age of 46.4 ± 11.4 years. The majority of the participants, 277 (79.4%) were sexually active before the age of 18 years and 180 (51.6%) had multiple sexual partners. Forty-eight (13.5%) of the participants were HIV positive. The proportion of HR-HPV was 53.0% (n = 188; 95%CI: 47.8-58.1%). From these samples, 13 different HR-HPV types with a total of 258 sequences were identified. The detection of HR-HPV increased significantly with an increase in the age of the participants. The predominant identified HR-HPV was HPV16, 50.4% followed by HPV31 (9.7%), HPV33 (8.5%), HPV39, and HPV68 each (5.8%) and HPV18 (4.7%). Of the total HR-HPV-positive women, 23.9% (45/188) were infected with multiple HR-HPV types. All HPV16, HPV18, HPV35, and HPV45 genotypes (as a single or in coinfections) were found to be associated with either high-grade lesions or cervical cancer. CONCLUSIONS HR-HPV infection was reportedly higher among women in the present study area. Based on our findings, we strongly recommend the nonavalent HPV vaccine for immunization and any HPV-based screening method to take into consideration the predominant genotypes circulating in the country. The role of multiple HPV infections in high-grade cervical lesions entails further study in Ethiopia.
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Affiliation(s)
- Awoke Derbie
- grid.442845.b0000 0004 0439 5951Department of Medical Microbiology, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia ,grid.7123.70000 0001 1250 5688Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia ,grid.442845.b0000 0004 0439 5951Department of Health Biotechnology, Institute of Biotechnology, Bahir Dar University, Bahir Dar, Ethiopia ,grid.7123.70000 0001 1250 5688Department of Medical Microbiology, Immunology and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia ,grid.411339.d0000 0000 8517 9062Department of Diagnostics, Institute of Virology, Leipzig University Hospital, Leipzig, Germany
| | - Melanie Maier
- grid.411339.d0000 0000 8517 9062Department of Diagnostics, Institute of Virology, Leipzig University Hospital, Leipzig, Germany
| | - Bereket Amare
- grid.442845.b0000 0004 0439 5951Department of Pathology, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Eyaya Misgan
- grid.442845.b0000 0004 0439 5951Department of Gynecology and Obstetrics, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Endalkachew Nibret
- grid.442845.b0000 0004 0439 5951Department of Health Biotechnology, Institute of Biotechnology, Bahir Dar University, Bahir Dar, Ethiopia ,grid.442845.b0000 0004 0439 5951Department of Biology, College of Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Uwe G. Liebert
- grid.411339.d0000 0000 8517 9062Department of Diagnostics, Institute of Virology, Leipzig University Hospital, Leipzig, Germany
| | - Yimtubezinash Woldeamanuel
- grid.7123.70000 0001 1250 5688Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia ,grid.7123.70000 0001 1250 5688Department of Medical Microbiology, Immunology and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Tamrat Abebe
- grid.7123.70000 0001 1250 5688Department of Medical Microbiology, Immunology and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Brackney MM, Weinberger DM, Higgins K, Meek J, Niccolai LM. Trends in Precancerous Cervical Lesions by Area-Based Measures of Poverty, Race, and Ethnicity, Connecticut, 2008-2018. Public Health Rep 2022; 137:1146-1152. [PMID: 34727517 PMCID: PMC9574305 DOI: 10.1177/00333549211056300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES Trends in the incidence of precancerous cervical lesions can be monitored to evaluate the impact of human papillomavirus (HPV) vaccination. The objective of this analysis was to determine whether declines in precancerous cervical lesions varied by area-based measures of poverty, race, and ethnicity. METHODS We analyzed 11 years of incidence data (2008-2018) from a statewide active surveillance system of precancerous cervical lesions in Connecticut. We divided area-based measures of poverty, race, and ethnicity (percentage of the population in a census tract who were living below the federal poverty level, who were Black, and who were Hispanic) at the census-tract level into 4 groups (<5.0%, 5.0%-9.9%, 10.0%-19.9%, ≥20.0%) using recommended cut points from the Public Health Disparities Geocoding Project. We estimated incidence rates and average annual percentage changes (AAPCs) stratified by age and each area-based measure using Joinpoint regression software. We used total population and estimated screened population as denominators for each age group to calculate rates and AAPCs. RESULTS During 2008-2018 in Connecticut, 18 878 women aged 21-39 were diagnosed with precancerous cervical lesions. After adjusting for screening, the largest declines occurred among women aged 21-24 (AAPC = -11.5%; 95% CI, -13.6% to -9.4%). We found significant and similar annual declines (~10%-12%) in this age group across all 4 levels of poverty, race, and ethnicity. CONCLUSIONS This analysis adds to the growing body of evidence demonstrating the positive impact of population-level HPV vaccination among young women that appears similar across area-based measures of sociodemographic characteristics. Monitoring is necessary to ensure the continuation of this progress in all communities.
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Affiliation(s)
- Monica M. Brackney
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, USA
| | - Daniel M. Weinberger
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
| | - Kyle Higgins
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, USA
| | - James Meek
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, USA
| | - Linda M. Niccolai
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, USA
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
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Nailescu C, Ermel AC, Shew ML. Human papillomavirus-related cancer risk for solid organ transplant recipients during adult life and early prevention strategies during childhood and adolescence. Pediatr Transplant 2022; 26:e14341. [PMID: 35808949 DOI: 10.1111/petr.14341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 11/27/2022]
Abstract
Malignancies are among the top three causes of patient death in pediatric and adult kidney transplant (KT) recipients. Solid organ transplant (SOT) recipients, including KT individuals, experience more cancer compared with the general population, including human papillomavirus (HPV)-related anogenital and oropharyngeal cancers. This article describes the epidemiology, pathophysiology and natural history of the HPV infection in both the general population and in SOT recipients, as well as its role in the development of HPV-related pre-cancerous lesions and cancers. Emphasis is given to the primary prevention strategy, HPV vaccination in SOT recipients, and its particularities compared with the general population. Secondary prevention strategies in SOT recipients are discussed and compared with the general population, highlighting cervical cancer screening needs within SOT populations. The article emphasizes how these primary and secondary HPV prevention strategies applied during childhood and adolescence by the pediatric transplant professionals, can lower the burden of HPV-related cancers for SOT recipients in subsequent years, during their adult life.
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Affiliation(s)
- Corina Nailescu
- Section of Pediatric Nephrology and Hypertension, Department of Pediatrics, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Aaron C Ermel
- Section of Infectious Diseases, Department of Medicine, Indiana University Health University Hospital, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Marcia L Shew
- Section of Adolescent Medicine, Department of Pediatrics, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, Indiana, USA
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Histopathological profile of cervical punch biopsies and risk factors associated with high-grade cervical precancerous lesions and cancer in northwest Ethiopia. PLoS One 2022; 17:e0274466. [PMID: 36094938 PMCID: PMC9467373 DOI: 10.1371/journal.pone.0274466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/27/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction Cervical cancer is an important public health problem in Ethiopia. However, the disease is not well characterized and studied in various parts of the country. This study was designed to describe the histopathological profile of cervical biopsies and to identify risk factors associated with high-grade cervical lesions and cancer (CIN2+C). Methods A cross-sectional study was conducted at Felege Hiwot Compressive Specialized Hospital (FHCSH) between 1 March 2019 and 30 October 2021. A structured questionnaire was used to collect data on the participants’ demographic, reproductive and gynecologic history. From women presented with different degrees of cervical lesions, a senior gynecologist collected cervical swabs using (Digene HC2 DNA collection device: Qiagen, Hilden, Germany) for detection of high-risk Human papillomaviruses (HR-HPV) and punch biopsy for histopathological examinations. HR-HPVs were detected using the Abbott Alinity m system following the manufacturer protocol at the Institute of Virology, Leipzig University Hospital, Germany. Collected data entered and analyzed using SPSS version 25. A logistic regression model was used for both bivariable & multivariable analysis in order to determine the association between independent variables and CIN2+C. Statistical significance was set at a p-value <0.05. Results In this study, 335 women were included; the mean age was at 46.5±11.4 years. Most were living in rural settings, 221(66%) and had no formal education, 259 (77.3%). More than half of the participants, 193(57.6%) were unaware of cervical cancer. The prevalence of HIV infection and previous history of cervical screening were 44(13.1%) and 93(27.8%), respectively. HR-HPVs were detected in 178(54.3%) of the participants. The majority of biopsies, 140(41.8%; 95%CI: 36.6–47.1%), were diagnosed as cervical carcinoma. Normal histology, cervicitis, cervical intraepithelial neoplasia (CIN)-1, CIN-2, and CIN-3 accounted for 74(22.1%), 30(9.0%), 40(11.9%), 12(3.6%), and 12(3.6%), respectively. High-grade lesions and cancer (CIN2+C) together accounted 164(49.0%; 95%CI: 43.6–54.2). Cervical cancer increased steadily with the age of the participants (p<0.001) in which women above the age of fifty were approximately four times more likely to develop CIN2+C than the younger ones (AOR: 3.73; 95%CI: 1.80–7.82; p<0.001). Likewise, no screening history in the last five years (AOR: 2.03; 95%CI: 1.05–3.92; p = 0.035) and being infected with HR-HPVs (AOR: 14.23; 95%CI: 7.9–25.64; p<0.001) were found significantly associated with CIN2+C. Conclusions The findings of this study revealed that cervical cancer continues to be an important women’s health challenge in northwest Ethiopia. Postmenopausal women, who had no screening history within a five-year period and those women who tested positive for HR-HPV need special attention. It is important to increase the awareness of women about cervical cancer and actions for early detection of precancerous lesions should be expanded.
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Lipid Nanoparticles for mRNA Delivery to Enhance Cancer Immunotherapy. Molecules 2022; 27:molecules27175607. [PMID: 36080373 PMCID: PMC9458026 DOI: 10.3390/molecules27175607] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 12/24/2022] Open
Abstract
Messenger RNA (mRNA) is being developed by researchers as a novel drug for the treatment or prevention of many diseases. However, to enable mRNA to fully exploit its effects in vivo, researchers need to develop safer and more effective mRNA delivery systems that improve mRNA stability and enhance the ability of cells to take up and release mRNA. To date, lipid nanoparticles are promising nanodrug carriers for tumor therapy, which can significantly improve the immunotherapeutic effects of conventional drugs by modulating mRNA delivery, and have attracted widespread interest in the biomedical field. This review focuses on the delivery of mRNA by lipid nanoparticles for cancer treatment. We summarize some common tumor immunotherapy and mRNA delivery strategies, describe the clinical advantages of lipid nanoparticles for mRNA delivery, and provide an outlook on the current challenges and future developments of this technology.
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Nailescu C, Shew ML. Human papillomavirus infection-related cancer risk for kidney transplant recipients during adult life can be reduced by vaccination during childhood and adolescence. Front Pediatr 2022; 10:1057454. [PMID: 36533243 PMCID: PMC9749905 DOI: 10.3389/fped.2022.1057454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/15/2022] [Indexed: 12/02/2022] Open
Abstract
Malignancies are found between the first three reasons of mortality in pediatric and adult kidney transplant recipients, who overall have disproportionately higher rates of cancer compared to the general population, including human papillomavirus (HPV)-related genital, anal and oropharynx region cancers. Therefore, preventing HPV in this patient population is extremely important. HPV-vaccine was demonstrated to prevent HPV infection in individuals with intact immune systems. In addition, recent data reported less precancerous HPV lesions and cervical cancers with use of HPV vaccine. Since HPV is a sexually transmitted virus that is typically acquired shortly after the onset of sexual activity, it is best to administer the HPV vaccine immunization prior to the onset of sexual activity. This article reviews the epidemiology and pathophysiology of the HPV infection, as well as its role in the development of HPV-related pre-cancerous lesions and cancers in both general population and kidney transplant recipients. The focus is on the most effective primary prophylactic strategy, which is the HPV vaccination. The particularities of HPV vaccination strategies in kidney transplant recipients are compared to the general population. In addition, the article analyzes the various causes of suboptimal HPV immunization rates in kidney transplant candidates and recipients and discusses vaccination optimization strategies that can be applied during childhood and adolescence to reduce the burden of HPV-related disease states and cancer among adult kidney transplant recipients.
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Affiliation(s)
- Corina Nailescu
- Department of Pediatrics, Riley Hospital for Children, Indiana University, Indianapolis, IN, United States
| | - Marcia L Shew
- Department of Pediatrics, Riley Hospital for Children, Indiana University, Indianapolis, IN, United States
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Wang W, Kothari S, Baay M, Garland SM, Giuliano AR, Nygård M, Velicer C, Tota J, Sinha A, Skufca J, Verstraeten T, Sundström K. Real-world impact and effectiveness assessment of the quadrivalent HPV vaccine: a systematic review of study designs and data sources. Expert Rev Vaccines 2021; 21:227-240. [PMID: 34845951 DOI: 10.1080/14760584.2022.2008243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Vaccine effectiveness and impact studies are typically observational, generating evidence after vaccine launch in a real-world setting. For human papillomavirus (HPV) vaccination studies, the variety of data sources and methods used is pronounced. Careful selection of study design, data capture and analytical methods can mitigate potential bias in such studies. AREAS COVERED We systematically reviewed the different study designs, methods, and data sources in published evidence (1/2007-3/2020), which assessed the quadrivalent HPV vaccine effectiveness and impact on cervical/cervicovaginal, anal, and oral HPV infections, anogenital warts, lesions in anus, cervix, oropharynx, penis, vagina or vulva, and recurrent respiratory papillomatosis. EXPERT OPINION The rapid growth in access to real-world data allows global monitoring of effects of different public health interventions, including HPV vaccination programs. But the use of data which are not collected or organized to support research also underscore a need to develop robust methodology that provides insight of vaccine effects and consequences of different health policy decisions. To achieve the WHO elimination goal, we foresee a growing need to evaluate HPV vaccination programs globally. A critical appraisal summary of methodology used will provide timely guidance to researchers who want to initiate research activities in various settings.
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Affiliation(s)
- Wei Wang
- Center for Observational and Real-world Evidence, Merck & Co. Inc., Kenilworth, NJ, USA
| | - Smita Kothari
- Center for Observational and Real-world Evidence, Merck & Co. Inc., Kenilworth, NJ, USA
| | - Marc Baay
- P95 Epidemiology & Pharmacovigilance, Leuven, Belgium
| | - Suzanne M Garland
- Department Obstetrics and Gynaecology, University of Melbourne, Centre Women's Infectious Diseases Research, Royal Women's Hospital, and Infection & Immunity Murdoch Children's Research Institute, Parkville, Australia
| | - Anna R Giuliano
- Center for Immunizaton and Infection Research in Cancer, Moffitt Cancer Center, Tampa, FL, USA
| | - Mari Nygård
- Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Christine Velicer
- Center for Observational and Real-world Evidence, Merck & Co. Inc., Kenilworth, NJ, USA
| | - Joseph Tota
- Center for Observational and Real-world Evidence, Merck & Co. Inc., Kenilworth, NJ, USA
| | - Anushua Sinha
- Center for Observational and Real-world Evidence, Merck & Co. Inc., Kenilworth, NJ, USA
| | - Jozica Skufca
- P95 Epidemiology & Pharmacovigilance, Leuven, Belgium
| | | | - Karin Sundström
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
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Oliveira CR, Ortiz AM, Sheth SS, Shapiro ED, Niccolai LM. Effectiveness of HPV vaccine by age at vaccination and number of doses: protocol for a population-based matched case-control study. BMJ Open 2021; 11:e043093. [PMID: 33875441 PMCID: PMC8057558 DOI: 10.1136/bmjopen-2020-043093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION In 2006, the first human papillomavirus (HPV) vaccine was approved by the Food and Drug Administration in the USA based on pre-licensure clinical trials that found it to be highly efficacious at preventing persistent infection and precancerous, high-grade cervical lesions (HGCLs) caused by viral types the vaccine protects against. However, the real-world effectiveness of HPV vaccines as used in clinical practice may be quite different from the efficacy found in pre-licensure clinical trials. More than 10 years have passed since the introduction of the vaccine programme. It is critical to determine if the full benefits of HPV are being realised in real-world settings. METHODS AND ANALYSIS The objectives of this study were to estimate the effectiveness of HPV vaccines as used in real-world clinical settings and to determine the degree to which the vaccine's effectiveness varies based on age at the time of immunisation and the number of doses received. The study will be a population-based, matched case-control study. Cases will be women with newly diagnosed HGCL associated with HPV types 16 and 18. Matched controls will be women with a normal Pap test result, matched individually to cases in a 2:1 ratio by age, a practice and date of testing. Medical records will be reviewed to determine dates of receipt of the HPV vaccine for all participants. We will use multivariate conditional logistic regression to control for potential confounders. ETHICS AND DISSEMINATION This protocol presents minimal risk to the subjects. This protocol has received approval from the Institutional Review Board of Yale University (HIC: 1502015308), and a Health Insurance Portability and Accountability Act (HIPAA) Waiver of Authorisation has been granted to allow investigators to recruit subjects for the study. Findings will be disseminated through peer-reviewed, open-access scientific journals and conference presentations.
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Affiliation(s)
- Carlos R Oliveira
- Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
| | | | - Sangini S Sheth
- Obstetrics, Gynecology, & Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Eugene D Shapiro
- Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
- Epidemiology of Microbial Diseases, Yale University School of Public Health, New Haven, Connecticut, USA
| | - Linda M Niccolai
- Epidemiology of Microbial Diseases, Yale University School of Public Health, New Haven, Connecticut, USA
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Brotherton JML, Wheeler C, Clifford GM, Elfström M, Saville M, Kaldor J, Machalek DA. Surveillance systems for monitoring cervical cancer elimination efforts: Focus on HPV infection, cervical dysplasia, cervical screening and treatment. Prev Med 2021; 144:106293. [PMID: 33075352 PMCID: PMC8403014 DOI: 10.1016/j.ypmed.2020.106293] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 01/08/2023]
Abstract
In order to achieve the global elimination of cervical cancer as a public health problem, close surveillance of progress in public health and clinical activities and outcomes across the three pillars of vaccination, screening and treatment will be required. Surveillance should ideally occur within an integrated system that is planned, funded, and regularly evaluated to ensure it is providing timely, accurate and relevant feedback for action. In this paper, we conceptualise the main public health surveillance objectives as process and outcome measures in each of the three pillars. Process measures include coverage/participation measures for vaccination, screening and treatment alongside the ongoing assessment of the quality and reach of these programs and activities. Outcome measures related to the natural history of human papillomavirus (HPV) infection include HPV infection prevalence, precursor cervical lesions and cervical cancers (including stage at diagnosis, cancer incidence and mortality). These outcome measures can be used for monitoring the effectiveness of the three core activities in the short, medium and long term to assess whether these interventions are effectively reducing their occurrence. We discuss possible methods for the surveillance of these measures in the context of country capacity, drawing from examples in Australia, the USA and in low and middle income countries.
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Affiliation(s)
- Julia M L Brotherton
- VCS Population Health, VCS Foundation, Level 6, 176 Wellington Parade, East Melbourne, Victoria 3002, Australia; Melbourne School of Population and Global Health, University of Melbourne, 207 Bouverie Street, Carlton 3053, Victoria, Australia.
| | - Cosette Wheeler
- Department of Pathology and Obstetrics & Gynecology, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - Gary M Clifford
- International Agency for Research on Cancer, 150 Cours Albert Thomas, 69372 Lyon, Cedex 08, France
| | - Miriam Elfström
- Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé 8, 8th floor, 141 52 Huddinge, Stockholm, Sweden
| | - Marion Saville
- VCS Population Health, VCS Foundation, Level 6, 176 Wellington Parade, East Melbourne, Victoria 3002, Australia; University Department of Obstetrics and Gynaecology, University of Melbourne, The Royal Women's Hospital, Grattan St & Flemington Rd, Parkville, VIC, 3052, Australia
| | - John Kaldor
- Kirby Institute, Level 6, Wallace Wurth Building, University of New South Wales, High Street, Kensington, NSW 2052, Australia
| | - Dorothy A Machalek
- Melbourne School of Population and Global Health, University of Melbourne, 207 Bouverie Street, Carlton 3053, Victoria, Australia; Kirby Institute, Level 6, Wallace Wurth Building, University of New South Wales, High Street, Kensington, NSW 2052, Australia; Centre for Women's Infectious Diseases, The Royal Women's Hospital, Grattan St & Flemington Rd, Parkville, VIC 3052, Australia
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Oliveira CR, Niccolai LM. Monitoring HPV vaccine impact on cervical disease: Status and future directions for the era of cervical cancer elimination. Prev Med 2021; 144:106363. [PMID: 33678234 PMCID: PMC8582276 DOI: 10.1016/j.ypmed.2020.106363] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/16/2022]
Abstract
Post-licensure monitoring of the impact of HPV vaccines is critical to track the progress being made toward cervical cancer elimination and to identify areas where further progress can accelerate the achievement of this important public health goal. Over the past decade, a large body of evidence has revealed convincing benefits of HPV vaccination in preventing cervical infections and precancers at the individual-level (i.e., direct effectiveness) as well as in reducing the population-level burden of disease (i.e., overall effectiveness). At this time, effectiveness of the vaccines on preventing cervical cancer is just beginning to emerge given that there is a prolonged latency period for invasive disease. As we enter the era of cervical cancer elimination, these early and promising results may be expected in other countries in the near future. Thus, monitoring the direct and overall effectiveness for cervical cancer is an urgent research priority. In this article, we summarize what is known about the effectiveness of HPV vaccines on precancerous outcomes, and we highlight considerations for continuing these important public health activities going forward to monitor progress toward cervical cancer elimination.
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Affiliation(s)
| | - Linda M Niccolai
- Yale School of Public Health, Department of Epidemiology of Microbial Diseases, USA.
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Donken R, van Niekerk D, Hamm J, Spinelli JJ, Smith L, Sadarangani M, Albert A, Money D, Dobson S, Miller D, Lee M, Mitchell-Foster S, Krajden M, Naus M, Ogilvie G. Declining rates of cervical intraepithelial neoplasia in British Columbia, Canada: An ecological analysis on the effects of the school-based human papillomavirus vaccination program. Int J Cancer 2021; 149:191-199. [PMID: 33586169 DOI: 10.1002/ijc.33513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 12/15/2022]
Abstract
Since 2008, girls in British Columbia (BC), Canada, have been offered HPV vaccination through a school-based, publicly funded immunization program. The oldest birth cohort eligible for the vaccination program was born in 1994 and uptake is on average 63%. To evaluate the impact of the HPV vaccine in BC, ecological trends in cervical intraepithelial neoplasia (CIN) rates were assessed in young women before and after the implementation of the HPV vaccination program. Information on all Pap smears and histopathological abnormalities, in calendar years 2004-2017 in women 16-28 years of age in BC were obtained from the population-based BC Cancer Cervix Screening Program database. Rates of CIN 2 and 3 were calculated as the number of cases divided by the number of cytology specimens for that period. Rate ratios (RR) were calculated by negative binomial piecewise regression. Age-centered incidence rates of CIN 2 and 3 in BC declined significantly among women 16-23 years of age after HPV vaccine introduction compared to before vaccine introduction. The overall reduction postvaccination for CIN2 and 3 in women 16-23 years was respectively 62% (95% CI 54-68%) and 65% (95% CI 58-71%). Age-specific rates for CIN2 significantly declined for those 18-22 years of age and for those 19, 20 and 23 years of age for CIN3. Among women 24-28 years of age no decline in CIN2 and 3 rate over time was observed. The observed reduction in CIN 2 and 3 rates since the introduction of the school-based HPV vaccine program might illustrate the population impact of the BC provincial school-based HPV vaccination program.
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Affiliation(s)
- Robine Donken
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada.,Women's Health Research Institute, BC Women's Hospital and Health Service, Vancouver, British Columbia, Canada.,School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dirk van Niekerk
- BC Cancer, Vancouver, British Columbia, Canada.,Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jeremy Hamm
- BC Cancer, Vancouver, British Columbia, Canada
| | - John J Spinelli
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada.,BC Cancer, Vancouver, British Columbia, Canada
| | - Laurie Smith
- Women's Health Research Institute, BC Women's Hospital and Health Service, Vancouver, British Columbia, Canada.,BC Cancer, Vancouver, British Columbia, Canada
| | - Manish Sadarangani
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Arianne Albert
- Women's Health Research Institute, BC Women's Hospital and Health Service, Vancouver, British Columbia, Canada
| | - Deborah Money
- Women's Health Research Institute, BC Women's Hospital and Health Service, Vancouver, British Columbia, Canada.,Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Dianne Miller
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Marette Lee
- BC Cancer, Vancouver, British Columbia, Canada.,Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Sheona Mitchell-Foster
- Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, British Columbia, Canada.,Northern Medical Program, University of British Columbia, Prince George, British Columbia, Canada
| | - Mel Krajden
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada.,BC Centre for Disease Control, Vancouver, British Columbia, Canada
| | - Monika Naus
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada.,BC Centre for Disease Control, Vancouver, British Columbia, Canada
| | - Gina Ogilvie
- Women's Health Research Institute, BC Women's Hospital and Health Service, Vancouver, British Columbia, Canada.,School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
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12
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Avni-Singer L, Oliveira CR, Torres A, Shapiro ED, Niccolai LM, Sheth SS. Evaluation of an Inpatient Postpartum Human Papillomavirus Immunization Program. Obstet Gynecol 2020; 136:1006-1015. [PMID: 33030866 DOI: 10.1097/aog.0000000000004097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate the result of an inpatient postpartum human papillomavirus (HPV) immunization pilot program in a diverse, low-income patient population from an urban, hospital-based obstetrics and gynecology clinic. METHODS In this cohort study, we present results from the first 2 years of the inpatient postpartum HPV immunization program, in which vaccine-eligible postpartum women were identified and immunized during their hospital stays. The program was implemented after educational outreach with prenatal and postpartum clinicians and nurses. Associations between receipt of the HPV vaccine as an inpatient and the characteristics of patients, and the likelihood of and missed opportunities for receiving a subsequent dose of the HPV vaccine as an outpatient were determined using logistic regression, time-to-event analyses, chi-squared tests and t-tests. RESULTS From April 11, 2017, to April 10, 2019, 394 (59.2%) of 666 postpartum women were eligible for the inpatient postpartum HPV immunization program. The majority (265/394, 67.3%) received the immunization pilot program HPV dose; 36 of those 265 (13.6%) completed the series with that dose. Among women due for additional doses after hospital discharge, those who received the inpatient dose were more likely to receive a subsequent outpatient dose (138/229) than were those who did not receive an inpatient dose (39/129; hazard ratio 2.51, 95% CI 1.76-3.58). On average, there were 30.7 fewer (95% CI 5.8-55.6, P<.02) missed opportunities for subsequent outpatient doses for every 100 eligible visits among women who received the inpatient dose, compared with women who did not. By the end of the study, the proportion of women who had completed the vaccine series was higher among women who received the inpatient dose (95/265, 35.8%) than in those who did not (12 out 129, 9.3%; odds ratio 5.45, 95% CI 2.86-10.38). CONCLUSION The inpatient postpartum HPV immunization program was associated with increased rates of immunization and addressed a previously missed opportunity. Inpatient immunization programs can serve as a critical way to address gaps in vaccine uptake.
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Affiliation(s)
- Lital Avni-Singer
- Department of Obstetrics, Gynecology & Reproductive Sciences and the Department of Pediatrics, Yale School of Medicine, and the Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut
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13
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Brackney MM, Gargano JW, Hannagan SE, Meek J, Querec TD, Niccolai LM. Human Papillomavirus 16/18-Associated Cervical Lesions: Differences by Area-Based Measures of Race and Poverty. Am J Prev Med 2020; 58:e149-e157. [PMID: 32001053 DOI: 10.1016/j.amepre.2019.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 11/26/2022]
Abstract
INTRODUCTION This analysis evaluates trends in cervical lesions with human papillomavirus 16/18 detected by area-based measures of race, ethnicity, and poverty during 2008-2015. METHODS Trends in the proportion of lesions with human papillomavirus 16/18 detected among residents of New Haven County, Connecticut were examined by area-based measures of race, ethnicity, and poverty. Area-based measures are aggregate descriptors of census tract characteristics useful for measuring differences in health outcomes in the context of where people live. Multivariable logistic regression modeling was conducted, adjusted for individual-level race, ethnicity, and insurance status to assess the independent effects of area-based measures. Data were analyzed in 2018-2019. RESULTS Among women aged 21-24 years and 25-29 years, significant declines in the proportion of lesions with human papillomavirus 16/18 were observed. Among women aged 21-24 years, declines began earlier and were greater in magnitude in areas of lower poverty (OR=0.55, 95% CI=0.36, 0.85 for 2010-2012 vs 2008-2009 and OR=0.30, 95% CI=0.18, 0.51 for 2013-2015 vs 2008-2009) compared with higher poverty (OR=1.66, 95% CI=0.86, 3.21 and OR=0.48, 95% CI=0.19, 1.20). Similar patterns were observed for women aged 25-29 years, and for area-based measures of race and ethnicity. CONCLUSIONS Differences were observed in declines in the proportion of human papillomavirus 16/18 lesions by area-based measures since the introduction of human papillomavirus vaccines, with greater and earlier declines in areas with fewer residents living in poverty and racial minorities. Ongoing human papillomavirus vaccine impact monitoring is necessary to track differences by sociodemographic characteristics.
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Affiliation(s)
- Monica M Brackney
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut.
| | - Julia W Gargano
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Susan E Hannagan
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut
| | - James Meek
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut
| | - Troy D Querec
- Division of High Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Linda M Niccolai
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut
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14
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Avni-Singer LR, Yakely A, Sheth SS, Shapiro ED, Niccolai LM, Oliveira CR. Assessing sociodemographic differences in human papillomavirus vaccine impact studies in the United States: a systematic review using narrative synthesis. Public Health 2020; 178:137-150. [PMID: 31698136 PMCID: PMC6994345 DOI: 10.1016/j.puhe.2019.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 07/26/2019] [Accepted: 08/15/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Sociodemographic disparities in the incidence and mortality of human papillomavirus (HPV)-associated conditions have been well documented in the pre-HPV vaccine era. It is still unknown if the introduction of routine vaccination has been effective in reducing these prevaccine era inequalities. The purpose of this review was to determine the utilization of sociodemographic variables to assess for disparities in population-level HPV vaccine impact research and to evaluate the current evidence for disparities in the reduction of HPV-associated conditions after vaccine introduction in the United States (US). STUDY DESIGN A systematic review of the literature from January 2007 through March 2018 was carried out to identify studies evaluating the impact HPV vaccines have had on the rates of HPV infection, genital warts, and cervical dysplasia (cervical intraepithelial neoplasia grades 1+) in the US. An in-depth review was then performed to synthesize these data and to assess the way prior studies have reported and evaluated for potential disparities in the vaccine's impact within various racial, ethnic, and/or socio-economic subgroups of the population. METHODS Vaccine impact studies measure the change in the population-level burden of disease prelicensure versus postlicensure of the vaccine. We systematically searched PubMed/Medline and Embase, combining search terms related to the HPV vaccine, sentinel surveillance, and HPV-associated conditions. Eligible studies were those with population-level, postvaccine introduction data that were conducted in the US. Finally, a cited reference search was conducted for all included articles using the Web of Science platform that accesses three major citation indexes: Science Citation Index, Social Sciences Citation Index, and Arts and Humanities Citation Index. This allowed us to screen not only the articles that were cited by our final collection of studies but also the articles that used our selected studies as one of their references. The study protocol is registered in PROSPERO (#CRD42018107579). RESULTS Overall, 23 of the 4139 references retrieved assessed the population-level impact of HPV vaccines between January 1, 2007, and March 29, 2018. Among these, 13 (57%) reported sociodemographic data. Only two articles reported stratified results by sociodemographic factors, thereby allowing assessment for potential disparate impact. One of these studies described differences in the impact of the vaccine by race, ethnicity, and income. CONCLUSION Although approximately half of the studies that assessed the impact of the HPV vaccine measured sociodemographic characteristics, few presented results in a way that allowed for the identification of potential differences in impact between the relevant subgroups of the population. Determining to what extent, if any, vaccines are reducing known sociodemographic disparities is an important public health priority and an essential step in developing immunization strategies that are beneficial for all.
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Affiliation(s)
- L R Avni-Singer
- Yale School of Public Health, Department of Epidemiology of Microbial Diseases, 60 College Street, New Haven, CT, 06520, USA.
| | - A Yakely
- Yale School of Public Health, Department of Epidemiology of Microbial Diseases, 60 College Street, New Haven, CT, 06520, USA
| | - S S Sheth
- Yale School of Medicine, Department of Obstetrics and Gynecology, 333 Cedar Street, PO Box 208063, Suite 302 FMB, New Haven, CT, 06520, USA
| | - E D Shapiro
- Yale School of Public Health, Department of Epidemiology of Microbial Diseases, 60 College Street, New Haven, CT, 06520, USA; Yale School of Medicine, Department of Pediatrics, P.O. Box 208064, New Haven, CT, 06520-8064, USA
| | - L M Niccolai
- Yale School of Public Health, Department of Epidemiology of Microbial Diseases, 60 College Street, New Haven, CT, 06520, USA
| | - C R Oliveira
- Yale School of Medicine, Department of Pediatrics, P.O. Box 208064, New Haven, CT, 06520-8064, USA
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15
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Giambi C, Rezza G. HPV Vaccines: An Important Tool for STI Prevention. Sex Transm Infect 2020. [DOI: 10.1007/978-3-030-02200-6_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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16
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Nailescu C, Nelson RD, Verghese PS, Twombley KE, Chishti AS, Mills M, Mahan JD, Slaven JE, Shew ML. Human Papillomavirus Vaccination in Male and Female Adolescents Before and After Kidney Transplantation: A Pediatric Nephrology Research Consortium Study. Front Pediatr 2020; 8:46. [PMID: 32154194 PMCID: PMC7045870 DOI: 10.3389/fped.2020.00046] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/28/2020] [Indexed: 01/10/2023] Open
Abstract
Background: Kidney transplant (KT) recipients have higher incidence of malignancies, including Human Papillomavirus (HPV)-associated cancers. Thus, HPV vaccines may have an important role in preventing HPV-related disease in this population; however, immunogenicity and safety data are lacking. Objective: To examine the immunological response and tolerability to HPV vaccination in pediatric KT recipients compared to future KT candidates. Methods: The quadrivalent HPV vaccine was administered to girls and boys age 9-18 recruited from seven centers part of the Pediatric Nephrology Research Consortium. Subjects were recruited for three groups: (1) CKD: chronic kidney disease stages 3, 4, and 5 not on dialysis; (2) Dialysis; (3) KT recipients. The outcome consisted of antibody concentrations against HPV 6, 11, 16, and 18. Geometric mean titers (GMTs) and seroconversion rates were compared. Vaccine tolerability was assessed. Results: Sixty-five participants were recruited: 18 in the CKD, 18 in the dialysis, and 29 into the KT groups. KT patients had significantly lower GMTs after vaccination for all serotypes. The percentages of subjects who reached seroconversion were overall lower for the KT group, reaching statistical significance for HPV 6, 11, and 18. Comparing immunosuppressed subjects (anyone taking immunosuppression medications, whether KT recipient or not) with the non-immunosuppressed participants, the former had significantly lower GMTs for all the HPV serotypes and lower seroconversion rates for HPV 6, 11, and 18. KT females had higher GMTs and seroconversion rates for certain serotypes. There were no adverse events in either group. Conclusions: HPV vaccine was well-tolerated in this population. Pediatric KT recipients had in general lower GMTs and seroconversion rates compared to their peers with CKD or on dialysis. Immunosuppression played a role in the lack of seroconversion. Our results emphasize the importance of advocating for HPV vaccination prior to KT and acknowledge its safety post transplantation. Future studies are needed to investigate the effect of a supplemental dose of HPV vaccine in KT recipients who do not seroconvert and to evaluate the long-term persistence of antibodies post-KT.
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Affiliation(s)
- Corina Nailescu
- Department of Pediatrics, Indiana University, Riley Hospital for Children, Indianapolis, IN, United States
| | - Raoul D Nelson
- Department of Pediatrics, University of Utah, Primary Children's Hospital, Salt Lake City, UT, United States
| | - Priya S Verghese
- Department of Pediatrics, University of Minnesota Masonic Children's Hospital, Minneapolis, MN, United States
| | - Katherine E Twombley
- Department of Pediatrics, Medical University of South Carolina Children's Hospital, Charleston, SC, United States
| | - Aftab S Chishti
- Department of Pediatrics, Kentucky Children's Hospital, University of Kentucky, Lexington, KY, United States
| | - Michele Mills
- Department of Pediatrics, C. S. Mott Children's Hospital, University of Michigan, Ann Arbor, MI, United States
| | - John D Mahan
- Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, Columbus, OH, United States
| | - James E Slaven
- Department of Biostatistics, Indiana University, Indianapolis, IN, United States
| | - Marcia L Shew
- Department of Pediatrics, Indiana University, Riley Hospital for Children, Indianapolis, IN, United States
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17
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Hungerford DJ, French N, Iturriza-Gómara M, Read JM, Cunliffe NA, Vivancos R. Reduction in hospitalisations for acute gastroenteritis-associated childhood seizures since introduction of rotavirus vaccination: a time-series and change-point analysis of hospital admissions in England. J Epidemiol Community Health 2019; 73:1020-1025. [PMID: 31511311 PMCID: PMC6877709 DOI: 10.1136/jech-2019-213055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/03/2019] [Accepted: 09/03/2019] [Indexed: 01/17/2023]
Abstract
Introduction The incidence of severe childhood diarrhoea has fallen substantially following the introduction of rotavirus vaccine in the UK in July 2013. Since children with rotavirus infection may experience febrile and afebrile seizures, we evaluated the impact of rotavirus vaccination on seizure hospitalisations in children in England. Methods Using data from Hospital Episode Statistics, we employed interrupted time-series analyses to assess changes in monthly hospital admissions for seizures among children aged <5 years from July 2000 to June 2017. Outcome measures comprised all seizures and febrile seizures, with and without a co-diagnosis of acute gastroenteritis (AGE). Models were adjusted for pneumococcal conjugate vaccine (PCV) introduction. Change-point analysis was used to independently identify step-changes in the time-series. Results Among hospitalised children aged <5 years, the incidence of any seizures and febrile seizures with AGE decreased post-vaccine introduction by 23% (95% CI: 11% to 33%) and 31% (95% CI: 19% to 41%), respectively. For febrile seizures with AGE, a single change-point was identified in July 2013 (95% CI: June 2013 to December 2013). Reductions in seizure incidence were higher during the rotavirus season (49%, 95% CI: 37% to 58%) compared with out-of-season (13%, 95% CI: −4 to 28%) and showed no relation to PCV introduction. There were small reductions in any seizures with any co-diagnosis (4%, 95% CI: 0% to 8%) and in febrile seizures with any co-diagnosis (10%, 95% CI: 2% to 16%). Conclusion Rotavirus vaccination has reduced hospitalisations for seizures associated with AGE in England, providing additional evidence of population-level impact of rotavirus vaccination on seizure incidence in high-income countries.
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Affiliation(s)
- Daniel James Hungerford
- Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK .,NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, United Kingdom.,NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom.,Field Service, National Infection Service, Public Health England, Liverpool, UK
| | - Neil French
- Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,Tropical and Infectious Disease Unit, Royal Liverpool and Broadgreen University Hospitals NHS Trust, members of Liverpool Health Partners, Liverpool, United Kingdom
| | - Miren Iturriza-Gómara
- Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, United Kingdom
| | - Jonathan M Read
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, United Kingdom.,NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom.,Centre for Health Informatics, Computing and Statistics, Lancaster University, Faculty of Health and Medicine, Lancaster, UK
| | - Nigel A Cunliffe
- Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,Department of Microbiology, Alder Hey Children's NHS Foundation Trust, members of Liverpool Health Partners, Liverpool, United Kingdom
| | - Roberto Vivancos
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, United Kingdom.,NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom.,Field Service, National Infection Service, Public Health England, Liverpool, UK
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18
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Drolet M, Bénard É, Pérez N, Brisson M. Population-level impact and herd effects following the introduction of human papillomavirus vaccination programmes: updated systematic review and meta-analysis. Lancet 2019; 394:497-509. [PMID: 31255301 PMCID: PMC7316527 DOI: 10.1016/s0140-6736(19)30298-3] [Citation(s) in RCA: 542] [Impact Index Per Article: 108.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND More than 10 years have elapsed since human papillomavirus (HPV) vaccination was implemented. We did a systematic review and meta-analysis of the population-level impact of vaccinating girls and women against human papillomavirus on HPV infections, anogenital wart diagnoses, and cervical intraepithelial neoplasia grade 2+ (CIN2+) to summarise the most recent evidence about the effectiveness of HPV vaccines in real-world settings and to quantify the impact of multiple age-cohort vaccination. METHODS In this updated systematic review and meta-analysis, we used the same search strategy as in our previous paper. We searched MEDLINE and Embase for studies published between Feb 1, 2014, and Oct 11, 2018. Studies were eligible if they compared the frequency (prevalence or incidence) of at least one HPV-related endpoint (genital HPV infections, anogenital wart diagnoses, or histologically confirmed CIN2+) between pre-vaccination and post-vaccination periods among the general population and if they used the same population sources and recruitment methods before and after vaccination. Our primary assessment was the relative risk (RR) comparing the frequency (prevalence or incidence) of HPV-related endpoints between the pre-vaccination and post-vaccination periods. We stratified all analyses by sex, age, and years since introduction of HPV vaccination. We used random-effects models to estimate pooled relative risks. FINDINGS We identified 1702 potentially eligible articles for this systematic review and meta-analysis, and included 65 articles in 14 high-income countries: 23 for HPV infection, 29 for anogenital warts, and 13 for CIN2+. After 5-8 years of vaccination, the prevalence of HPV 16 and 18 decreased significantly by 83% (RR 0·17, 95% CI 0·11-0·25) among girls aged 13-19 years, and decreased significantly by 66% (RR 0·34, 95% CI 0·23-0·49) among women aged 20-24 years. The prevalence of HPV 31, 33, and 45 decreased significantly by 54% (RR 0·46, 95% CI 0·33-0·66) among girls aged 13-19 years. Anogenital wart diagnoses decreased significantly by 67% (RR 0·33, 95% CI 0·24-0·46) among girls aged 15-19 years, decreased significantly by 54% (RR 0·46, 95% CI 0.36-0.60) among women aged 20-24 years, and decreased significantly by 31% (RR 0·69, 95% CI 0·53-0·89) among women aged 25-29 years. Among boys aged 15-19 years anogenital wart diagnoses decreased significantly by 48% (RR 0·52, 95% CI 0·37-0·75) and among men aged 20-24 years they decreased significantly by 32% (RR 0·68, 95% CI 0·47-0·98). After 5-9 years of vaccination, CIN2+ decreased significantly by 51% (RR 0·49, 95% CI 0·42-0·58) among screened girls aged 15-19 years and decreased significantly by 31% (RR 0·69, 95% CI 0·57-0·84) among women aged 20-24 years. INTERPRETATION This updated systematic review and meta-analysis includes data from 60 million individuals and up to 8 years of post-vaccination follow-up. Our results show compelling evidence of the substantial impact of HPV vaccination programmes on HPV infections and CIN2+ among girls and women, and on anogenital warts diagnoses among girls, women, boys, and men. Additionally, programmes with multi-cohort vaccination and high vaccination coverage had a greater direct impact and herd effects. FUNDING WHO, Canadian Institutes of Health Research, Fonds de recherche du Québec - Santé.
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Affiliation(s)
- Mélanie Drolet
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Élodie Bénard
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada; Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Norma Pérez
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Marc Brisson
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada; Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Québec, QC, Canada; Department of Infectious Disease Epidemiology, Imperial College, London, UK.
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19
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Russ SM, Brackney M, Meek J, Niccolai LM. Missed Opportunities for HPV Vaccination Among Vaccine-Eligible Women with High Grade Cervical Lesions. Vaccine 2019; 37:4262-4267. [PMID: 31248688 DOI: 10.1016/j.vaccine.2019.06.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 06/10/2019] [Accepted: 06/19/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Incidence of high-grade cervical lesions (HGCL) has declined in the U.S following the introduction of the human papillomavirus (HPV) vaccine in 2006. However, many women continue to be diagnosed with HGCLs, including those eligible to receive the vaccine but did not. We determined self-reported barriers to and correlates of HPV vaccination in vaccine-eligible women diagnosed with cervical intraepithelial neoplasia grades 2, 2/3, 3 and adenocarcinoma in situ (CIN2+). METHODS Data from a statewide surveillance system in Connecticut for CIN 2+ during 2008-2015 were used for this analysis. Enhanced surveillance data were collected for women residing in New Haven County, including HPV vaccine history and demographic factors, through chart review and patient interviews. Women who reported being unvaccinated were asked why they did not receive the vaccine. We evaluated trends in reasons for not receiving the vaccine using a two-sided Cochran Armitage trend test. Log-binomial analysis was used to assess associations between sociodemographic characteristics and vaccination status. RESULTS Between 2008 and 2015, 1625 vaccine-eligible women were diagnosed with CIN2+, with 882 of these women reporting never receiving the HPV vaccine. The proportion of unvaccinated vaccine-eligible women did not significantly change from 2008 to 2015 (p = 0.18, range 49.1% to 60.0%). The most commonly reported reason for being unvaccinated was age/too old, followed by previous HPV diagnosis and no provider recommendation. Women who had public or no insurance were significantly more likely than privately insured women to report being unvaccinated (p = <0.001, p = 0.0034). CONCLUSIONS Commonly cited barriers to vaccination, such as age/too old and previous HPV diagnosis, are not contraindications for vaccination. Furthermore, frequent reporting of no provider recommendation underscores the important role providers play in the immunization of their patients. These results indicate the need for greater efforts by providers to dispel myths about HPV vaccine eligibility and to promote vaccination for all of their eligible patients.
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Affiliation(s)
- Savanah M Russ
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, United States.
| | - Monica Brackney
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, United States.
| | - James Meek
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, United States.
| | - Linda M Niccolai
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, CT, United States.
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20
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Ährlund-Richter A, Cheng L, Hu YOO, Svensson M, Pennhag AAL, Ursu RG, Haeggblom L, Grün N, Ramqvist T, Engstrand L, Dalianis T, Du J. Changes in Cervical Human Papillomavirus (HPV) Prevalence at a Youth Clinic in Stockholm, Sweden, a Decade After the Introduction of the HPV Vaccine. Front Cell Infect Microbiol 2019; 9:59. [PMID: 30949454 PMCID: PMC6435486 DOI: 10.3389/fcimb.2019.00059] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/26/2019] [Indexed: 12/21/2022] Open
Abstract
Aim: This study aimed to follow the impact of human papillomavirus (HPV) catch-up and vaccination on the very high cervical HPV-prevalence in women at a youth clinic in central Stockholm during the period 2008–2018. Background: 2008–2010, cervical HPV-prevalence (69.5%) and HPV16 prevalence (34.7%) were high in non-vaccinated women at a youth clinic in Stockholm. 2013–2015, after the introduction of the quadrivalent-Gardasil® HPV-vaccine, HPV16 and HPV6 prevalence had decreased. Here, cervical HPV-prevalence was investigated 10 years after primary sampling. Material and Methods: 2017–2018, 178 cervical swabs, from women aged 15–23 years old, were tested for 27 HPV types by a bead-based multiplex method. HPV-prevalence data were then related to vaccination status and age and compared to HPV-prevalence in 615 samples from 2008 to 2010 and 338 samples from 2013 to 2015 from the same clinic, and to HPV types in 143 cervical cancer cases during 2003–2008 in Stockholm. Results: The proportion of vaccinated women increased from 10.7% (2008–2010) to 82.1% (2017–2018). The prevalence of all 27 HPVs, all high-risk HPVs (HR-HPVs) and the combined presence of the quadrivalent-Gardasil® types HPV16, 18, 6, and 11, was lower in vaccinated compared to unvaccinated women (67.4 vs. 93.3%, p = 0.0031, 60.1 vs. 86.7%, p = 0.0057 and 5.8 vs. 26.7%, p = 0.002, respectively). Furthermore, HPV16 prevalence in non-vaccinated women 2017–2018 was lower than that in 2008–2010 (16.7 and 34.7%, respectively, p = 0.0471) and similar trends were observed for HPV18 and 11. In both vaccinated and non-vaccinated women, the most common non-quadrivalent-Gardasil® vaccine HR-HPV types were HPV39, 51, 52, 56, and 59. Together they accounted for around 9.8% of cervical cancer cases in Stockholm during 2003–2008, and their prevalence tended to have increased during 2017–2018 compared to 2008–2010. Conclusion: Quadrivalent-Gardasil® vaccination has decreased HPV-vaccine type prevalence significantly. However, non-vaccine HR-HPV types remain high in potentially high-risk women at a youth clinic in Stockholm.
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Affiliation(s)
| | - Liqin Cheng
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden
| | - Yue O O Hu
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Department of Microbiology, Tumor and Cell Biology, Stockholm, Sweden
| | - Mikaela Svensson
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden
| | - Alexandra A L Pennhag
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Department of Microbiology, Tumor and Cell Biology, Stockholm, Sweden
| | - Ramona G Ursu
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden.,Department of Microbiology (Bacteriology, Virology) and Parasitology, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania
| | - Linnea Haeggblom
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Nathalie Grün
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Torbjörn Ramqvist
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Lars Engstrand
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Department of Microbiology, Tumor and Cell Biology, Stockholm, Sweden
| | - Tina Dalianis
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Juan Du
- Department of Microbiology, Tumor and Cell Biology, Centre for Translational Microbiome Research, Karolinska Institutet, Stockholm, Sweden
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McClung NM, Gargano JW, Bennett NM, Niccolai LM, Abdullah N, Griffin MR, Park IU, Cleveland AA, Querec TD, Unger ER, Markowitz LE. Trends in Human Papillomavirus Vaccine Types 16 and 18 in Cervical Precancers, 2008-2014. Cancer Epidemiol Biomarkers Prev 2019; 28:602-609. [PMID: 30792242 DOI: 10.1158/1055-9965.epi-18-0885] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/25/2018] [Accepted: 11/28/2018] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The impact of human papillomavirus (HPV) vaccination has been observed in the United States through declining cervical precancer incidence in young women. To further evaluate vaccine impact, we described trends in HPV vaccine types 16/18 in cervical precancers, 2008-2014. METHODS We analyzed data from a 5-site, population-based surveillance system. Archived specimens from women age 18-39 years diagnosed with cervical intraepithelial neoplasia grades 2-3 or adenocarcinoma in situ (CIN2+) were tested for 37 HPV types. We described the proportion and estimated number of cases of CIN2+ by HPV-type groups over time. Trends in HPV16/18-positive CIN2+ were examined, overall and by vaccination status, age, histologic grade, and race/ethnicity, using Cochrane-Armitage tests. RESULTS In 10,206 cases, the proportion and estimated number of cases of HPV16/18-positive CIN2+ declined from 52.7% (1,235 cases) in 2008 to 44.1% (819 cases) in 2014 (P < 0.001). Declining trends in the proportion of HPV16/18-positive CIN2+ were observed among vaccinated (55.2%-33.3%, P < 0.001) and unvaccinated (51.0%-47.3%, P = 0.03) women; ages 18-20 (48.7%-18.8%, P = 0.02), 21-24 (53.8%-44.0%, P < 0.001), 25-29 (56.9%-42.4%, P < 0.001), and 30-34 (49.8%-45.8%, P = 0.04) years; CIN2 (40.8%-29.9%, P < 0.001) and CIN2/3 (61.8%-46.2%, P < 0.001); non-Hispanic white (59.5%-47.9%, P < 0.001) and non-Hispanic black (40.7%-26.5%, P < 0.001). CONCLUSIONS From 2008-2014, the proportion of HPV16/18-positive CIN2+ declined, with the greatest declines in vaccinated women; declines in unvaccinated women suggest herd protection. IMPACT The declining proportion of HPV16/18-positive CIN2+ provides additional evidence of vaccine impact in the United States.
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Affiliation(s)
- Nancy M McClung
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia. .,Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Julia W Gargano
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Nancy M Bennett
- University of Rochester School of Medicine and Dentistry, Rochester, New York
| | | | - Nasreen Abdullah
- Oregon Health Authority Public Health Division, Portland, Oregon
| | | | - Ina U Park
- School of Medicine, University of California at San Francisco, San Francisco, California
| | - Angela A Cleveland
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Troy D Querec
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Elizabeth R Unger
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
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22
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Effectiveness of catch-up human papillomavirus vaccination on incident cervical neoplasia in a US health-care setting: a population-based case-control study. THE LANCET CHILD & ADOLESCENT HEALTH 2018; 2:707-714. [PMID: 30236379 DOI: 10.1016/s2352-4642(18)30220-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/29/2018] [Accepted: 07/04/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND The population effectiveness of human papillomavirus (HPV) catch-up vaccination, defined in the USA as first vaccination at ages 13-26 years, has not been studied extensively. We aimed to assess the risk of cervical intraepithelial neoplasia (CIN) 2, CIN3, adenocarcinoma in situ, or cancer (CIN2+ and CIN3+) by prior HPV vaccination status, age at first dose, and number of doses in women participating in a screening programme within a large integrated health-care system. METHODS We performed a nested case-control study of women enrolled in Kaiser Permanente Northern California (an integrated health-care delivery system in California, USA). Cases were women with CIN2+ or CIN3+ confirmed by histology between Jan 1, 1995, and June 30, 2014, and incidence density-selected controls were age-matched women without CIN2+ or CIN3+ at the time each case occurred. For each case, we randomly selected five controls. Cases and controls were aged 26 years or younger when the HPV quadrivalent vaccine became available in 2006. Rate ratios (RRs) from conditional logistic regression were estimated by age at time of first HPV quadrivalent vaccine dose (14-17 years, 18-20 years, and ≥21 years), and number of doses (one, two, and three or more doses) compared with no prior vaccination, with adjustment for smoking, hormonal contraceptive prescription, race or ethnicity, sexually transmitted infections, immunosuppression, parity, and number of outpatient visits. FINDINGS 4357 incident CIN2+ cases and 21 773 matched controls were included in the study. Of these, 1849 were incident CIN3+ cases with 9242 matched controls. The youngest age at time of first vaccination was 14 years. One or more HPV vaccine doses conferred protection against CIN2+ (RR 0·82, 95% CI 0·73-0·93) and CIN3+ (0·77, 0·64-0·94). We found the strongest protection against CIN2+ in women who had received at least three vaccine doses and had received their first dose aged 14-17 years (0·52, 0·36-0·74) or aged 18-20 years (0·65, 0·49-0·88). No significant protection was found in women aged 21 years or older at time of first dose (0·94, 0·81-1·09). Inferences were similar for CIN3+, but with stronger effects for women who received at least three vaccine doses and had received their first dose aged 14-17 years (0·27, 0·13-0·56) or aged 18-20 years (0·59, 0·36-0·97). INTERPRETATION Catch-up quadrivalent HPV vaccination with three doses was effective against CIN2+ and CIN3+ in girls and women aged 14-20 years at time of first vaccine dose but not for women aged 21 years and older at first dose. FUNDING US National Cancer Institute.
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23
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Kamada M, Inui H, Kagawa T, Mineda A, Tamura T, Fujioka T, Motoki T, Hirai H, Ishii E, Irahara M. What information can change the attitude of teachers toward the human papillomavirus vaccine? J Obstet Gynaecol Res 2018; 44:778-787. [PMID: 29442400 DOI: 10.1111/jog.13584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 12/18/2017] [Indexed: 12/22/2022]
Abstract
AIM We conducted a self-administered survey on the perception of teachers toward human papillomavirus (HPV) vaccine to determine the ways to increase their willingness to encourage its use. METHODS Answers were obtained both prior to and after having the teachers read five brief information articles: (i) cervical cancer knowledge, (ii) vaccine knowledge, (iii) result of a survey in Nagoya, (iv) news report of the World Health Organization statement and (v) articles written by Dr Muranaka, a journalist. RESULTS Most of the respondents (180/247) did not know about the natural history of cervical cancer. Only 36% knew that HPV is the cause of cervical cancer, although 63% knew that HPV vaccine would prevent cervical cancer. Few respondents had knowledge regarding adverse events following immunization and the survey results from Nagoya. Among those who were initially negative for the HPV vaccine, only 43% revealed that they fully understood its safety and only 29% reversed their opinion to recommend vaccination to their daughters and/or students, even after reading our informational material. The most useful information for changing their attitudes was to increase their understanding of vaccines and informing them about Nagoya city survey results. They mostly wanted a proof of the preventive effects of the vaccine on cervical cancer in Japan. CONCLUSION Gynecologists and pediatricians must proactively communicate accurate scientific information to the government and the media to spread awareness among people in Japan. Also, we must try to demonstrate the capabilities of this vaccine to prevent cervical cancer and/or its precancerous lesions.
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Affiliation(s)
- Masaharu Kamada
- Department of Obstetrics and Gynecology, Shikoku-chuo, Japan
| | - Hiroaki Inui
- Department of Obstetrics and Gynecology, Shikoku-chuo, Japan
| | - Tomohiro Kagawa
- Department of Obstetrics and Gynecology, Shikoku-chuo, Japan
| | - Ayuka Mineda
- Department of Obstetrics and Gynecology, Shikoku-chuo, Japan
| | - Takao Tamura
- Department of Obstetrics and Gynecology, Shikoku-chuo, Japan
| | - Tomohito Fujioka
- Department of Pediatrics, Shikoku Central Hospital of the Mutual Aid Association of Public School Teachers, Shikoku-chuo, Japan
| | - Takahiro Motoki
- Department of Pediatrics, Shikoku Central Hospital of the Mutual Aid Association of Public School Teachers, Shikoku-chuo, Japan
| | - Hiroki Hirai
- Department of Pediatrics, Shikoku Central Hospital of the Mutual Aid Association of Public School Teachers, Shikoku-chuo, Japan
| | - Eiichi Ishii
- Department of Pediatrics, Ehime University Graduate School of Medicine, Toon, Japan
| | - Minoru Irahara
- Department of Obstetrics and Gynecology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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24
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Brotherton JML, Bloem PN. Population-based HPV vaccination programmes are safe and effective: 2017 update and the impetus for achieving better global coverage. Best Pract Res Clin Obstet Gynaecol 2017; 47:42-58. [PMID: 28986092 DOI: 10.1016/j.bpobgyn.2017.08.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 08/27/2017] [Indexed: 01/11/2023]
Abstract
Persistent oncogenic human papillomavirus (HPV) is the cause of cervical cancer, as well as cancers of the anus, penis, vulva, vagina and oropharynx. There is good evidence that prophylactic HPV vaccines are immunogenic and effective against targeted-type HPV infections and type-specific genital lesions, including high-grade cervical intraepithelial neoplasia (CIN), when administered prior to HPV infection. There is good evidence that HPV vaccines are safe in population usage, with the most frequent adverse event being injection-site reactions. There is evidence to support some cross-protection against non-targeted types occurring following the administration of HPV vaccines. There is limited evidence suggesting that HPV vaccines may be beneficial in preventing future disease in women treated for high-grade CIN. This chapter focuses on the accumulated evidence regarding the global use of the three licensed HPV vaccines including safety, immunogenicity, duration of protection, effectiveness, coverage to date and barriers to higher coverage.
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Affiliation(s)
- Julia M L Brotherton
- National HPV Vaccination Program Register, VCS, East Melbourne, Victoria, Australia; School of Population and Global Health, University of Melbourne, Parkville, Victoria, Australia.
| | - Paul N Bloem
- Expanded Programme of Immunization, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland.
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