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Mimura W, Ishiguro C, Terada-Hirashima J, Matsunaga N, Sato S, Kawazoe Y, Maeda M, Murata F, Fukuda H. Effectiveness of BNT162b2 Against Infection, Symptomatic Infection, and Hospitalization Among Older Adults Aged ≥65 Years During the Delta Variant Predominance in Japan: The VENUS Study. J Epidemiol 2024; 34:278-285. [PMID: 37743530 PMCID: PMC11078592 DOI: 10.2188/jea.je20230106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023] Open
Abstract
BACKGROUND We evaluated the effectiveness of the BNT162b2 vaccine against infection, symptomatic infection, and hospitalization in older people during the Delta-predominant period (July 1 to September 30, 2021). METHODS We performed a population-based cohort study in an older adult population aged ≥65 years using data from the Vaccine Effectiveness, Networking, and Universal Safety Study conducted from January 1, 2019, to September 30, 2021, in Japan. We matched BNT162b2-vaccinated and -unvaccinated individuals in a 1:1 ratio on the date of vaccination of the vaccinated individual. We evaluated the effectiveness of the vaccine against infection, symptomatic infection, and coronavirus disease (COVID-19)-related hospitalization by comparing the vaccinated and unvaccinated groups. We estimated the risk ratio and risk difference using the Kaplan-Meier method with inverse probability weighting. The vaccine effectiveness was calculated as (1 - risk ratio) × 100%. RESULTS The study included 203,574 matched pairs aged ≥65 years. At 7 days after the second dose, the vaccine effectiveness of BNT162b2 against infection, symptomatic infection, and hospitalization was 78.1% (95% confidence interval [CI], 65.2-87.8%), 79.1% (95% CI, 64.6-88.9%), and 93.5% (95% CI, 83.7-100%), respectively. CONCLUSION BNT162b2 was highly effective against infection, symptomatic infection, and hospitalization in Japan's older adult population aged ≥65 years during the Delta-predominant period.
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Affiliation(s)
- Wataru Mimura
- Section of Clinical Epidemiology, Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine
| | - Chieko Ishiguro
- Section of Clinical Epidemiology, Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine
| | - Junko Terada-Hirashima
- Department of Respiratory Medicine, Center Hospital of the National Center for Global Health and Medicine
| | - Nobuaki Matsunaga
- AMR Clinical Reference Center, National Center for Global Health and Medicine
| | - Shuntaro Sato
- Clinical Research Center, Nagasaki University Hospital
| | | | - Megumi Maeda
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences
| | - Fumiko Murata
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences
| | - Haruhisa Fukuda
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences
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Nakayama R, Bunya N, Tagami T, Hayakawa M, Yamakawa K, Endo A, Ogura T, Hirayama A, Yasunaga H, Uemura S, Narimatsu E. Associated organs and system with COVID-19 death with information of organ support: a multicenter observational study. BMC Infect Dis 2023; 23:814. [PMID: 37986049 PMCID: PMC10662555 DOI: 10.1186/s12879-023-08817-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND The organ dysfunction that is associated with death in COVID-19 patients has not been determined in multicenter epidemiologic studies. In this study, we evaluated the major association with death, concomitant organ dysfunction, and proportion of multiple organ failure in deaths in patients with COVID-19, along with information on organ support. METHODS We performed an observational cohort study using the Japanese multicenter research of COVID-19 by assembling a real-world data (J-RECOVER) study database. This database consists of data on patients discharged between January 1 and September 31, 2020, with positive SARS-CoV-2 test results, regardless of intensive care unit admission status. These data were collected from the Diagnosis Procedure Combination and electronic medical records of 66 hospitals in Japan. The clinician identified and recorded the organ responsible for the death of COVID-19. RESULTS During the research period, 4,700 patients with COVID-19 were discharged from 66 hospitals participating in the J-RECOVER study; of which, 272 patients (5.8%) from 47 institutions who died were included in this study. Respiratory system dysfunction (87.1%) was the leading association with death, followed by cardiovascular (4.8%), central nervous (2.9%), gastrointestinal (2.6%), and renal (1.1%) dysfunction. Most patients (96.7%) who died of COVID-19 had respiratory system damage, and about half (48.9%) had multi-organ damage. Of the patients whose main association with death was respiratory dysfunction, 120 (50.6%) received mechanical ventilation. CONCLUSION This study showed that although respiratory dysfunction was the most common association with death in many cases, multi-organ dysfunction was associated with death due to COVID-19.
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Affiliation(s)
- Ryuichi Nakayama
- Department of Emergency Medicine, Sapporo Medical University School of Medicine, 291, Minami 1-jo Nishi 16-chome, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Naofumi Bunya
- Department of Emergency Medicine, Sapporo Medical University School of Medicine, 291, Minami 1-jo Nishi 16-chome, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
| | - Takashi Tagami
- Department of Emergency and Critical Care Medicine, Nippon Medical School Musashikosugi Hospital, Tokyo, Japan
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Mineji Hayakawa
- Department of Emergency Medicine, Hokkaido University Hospital, Hokkaido, Japan
| | - Kazuma Yamakawa
- Department of Emergency Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Akira Endo
- Trauma and Acute Critical Care Center, Tokyo Medical and Dental University Hospital, Tokyo, Japan
| | - Takayuki Ogura
- Department of Emergency Medicine and Critical Care Medicine, Tochigi Prefectural Emergency and Critical Care Centre, Imperial Foundation Saiseikai Utsunomiya Hospital, Tochigi, Japan
| | - Atsushi Hirayama
- Department of Social Medicine, Graduate School of Medicine, Public Health, Osaka University, Osaka, Japan
| | - Hideo Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Shuji Uemura
- Department of Emergency Medicine, Sapporo Medical University School of Medicine, 291, Minami 1-jo Nishi 16-chome, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Eichi Narimatsu
- Department of Emergency Medicine, Sapporo Medical University School of Medicine, 291, Minami 1-jo Nishi 16-chome, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
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Hara M, Furue T, Fukuoka M, Iwanaga K, Matsuishi E, Miike T, Sakamoto Y, Mukai N, Kinugasa Y, Shigyo M, Sonoda N, Tanaka M, Arase Y, Tanaka Y, Nakashima H, Irie S, Hirota Y. Comparison of self-reported symptoms in COVID-19 patients who had or had not previously received COVID-19 mRNA vaccination. Hum Vaccin Immunother 2023; 19:2226575. [PMID: 37357433 PMCID: PMC10294725 DOI: 10.1080/21645515.2023.2226575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/13/2023] [Indexed: 06/27/2023] Open
Abstract
Although mRNA coronavirus disease 2019 (COVID-19) vaccines have been reported for high effectiveness against symptoms, it remains unclear whether post-vaccination infections are less symptomatic than infections in vaccine-naive individuals. We included patients with COVID-19 diagnosed by polymerase chain reaction tests during Japan's alpha and delta variant epidemics. COVID-19 symptoms at approximately 4 weeks were compared based on COVID-19 vaccination status. In total, 398 cases (372 symptomatic and 26 asymptomatic; 286 unvaccinated, 66 vaccinated with one dose, and 46 with two doses) were analyzed. The most common symptoms were fever (78.4%), fatigue (78.4%), cough (74.4%), loss of taste or smell (62.8%), and headache (59.8%). Post-vaccination infections were significantly less likely to be symptomatic. Possible confounder-adjusted odds ratios of two vaccine doses against fatigue, dry eyes and mouth, insomnia, fever, shortness of breath, unusual muscle pains, and loss of taste or smell were 0.18 (95% confidence interval [CI]: 0.09-0.38), 0.22 (95% CI: 0.08-0.59), 0.33 (95% CI: 0.14-0.80), 0.31 (95% CI: 0.15-0.63), 0.36 (95% CI: 0.16-0.76), 0.40 (95% CI: 0.19-0.82), and 0.44 (95% CI: 0.22-0.87), respectively. Post-vaccination infections after two mRNA COVID-19 vaccine doses show milder and fewer symptoms than infections in unvaccinated patients, highlighting the effectiveness of vaccination.
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Affiliation(s)
- Megumi Hara
- Department of Preventive Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | | | | | | | | | - Toru Miike
- Department of Emergency Medicine, Saga University Hospital, Saga, Japan
| | - Yuichiro Sakamoto
- Department of Emergency Medicine, Saga University Hospital, Saga, Japan
| | - Naoko Mukai
- Fukuoka City Jonan Ward Public Health Center, Fukuoka, Japan
| | - Yuki Kinugasa
- Fukuoka City Higashi Ward Public Health Center, Fukuoka, Japan
| | - Mutsumi Shigyo
- Fukuoka City Hakata Ward Public Health Center, Fukuoka, Japan
| | - Noriko Sonoda
- Fukuoka City Sawara Ward Public Health Center, Fukuoka, Japan
| | | | | | - Yosuke Tanaka
- Kanenokuma Hospital, SOUSEIKAI Medical Group (Medical Co. LTA), Fukuoka, Japan
| | | | - Shin Irie
- SOUSEIKAI Medical Group (Medical Co. LTA), Fukuoka, Japan
| | - Yoshio Hirota
- Clinical Epidemiology Research Center, SOUSEIKAI Medical Group (Medical Co. LTA), Fukuoka, Japan
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Abdel-Qader DH, Abdel-Qader H, Silverthorne J, Kongkaew C, Meslamani AZA, Hayajneh W, Alwahadneh AM, Hamadi S, Abu-Qatouseh L, Awad R, Al Nsour M, Alhariri A, Shnewer K, Da'ssan M, Obeidat NM, Nusair KE, Jalamdeh MS, Hawari F, Asad M, AbuRuz S. Real-World Effectiveness of Four Types of COVID-19 Vaccines. Vaccines (Basel) 2023; 11:vaccines11050985. [PMID: 37243089 DOI: 10.3390/vaccines11050985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND There is a scarcity of evidence regarding the real-world effectiveness of coronavirus disease 2019 (COVID-19) vaccines. This was the first study to evaluate the effectiveness of four types of vaccines against asymptomatic and symptomatic infection, and COVID-19 outcomes among the general population. METHODS This was a matched comparison group quasi-experimental study conducted in Jordan between 1 January and 29 August 2021. In the first part of the study, 1200 fully vaccinated individuals were matched with 1200 unvaccinated control participants. In order to measure vaccine effectiveness, the infection rates of both vaccinated and unvaccinated groups were calculated. The second part of the study included measuring specific anti-SARS CoV-2 immune cells and antibodies. RESULTS BNT162b2 (Pfizer, New York, NY, USA) showed a significantly higher effectiveness against asymptomatic COVID-19 infection (91.7%) and hospitalization (99.5%) than BBIBP-CorV (Sinopharm, Beijing, China) (88.4% and 98.7%, respectively) and ChAdOx1 nCoV-19 (AstraZeneca, Cambridge, UK) (84.3%, and 98.9%, respectively). The effectiveness rates of the Sputnik V (Gamaleya Research Institute, Moscow, Russia) vaccine against asymptomatic, symptomatic, and hospitalization were 100%, 100%, and 66.7%, respectively. The highest median anti-spike (S) IgG values were seen in individuals who received BNT162b2 (2.9 AU/mL) and ChAdOx1 nCoV-19 (2.8 AU/mL) vaccines. The levels of anti-S IgG were significantly decreased after 7 months of vaccination with BNT162b2 and BBIBP-CorV. There were significant decreases in the median number of neutralizing antibodies one month and seven months after receiving BNT162b2 (from 88.5 to 75.2 4 Bioequivalent Allergen Unit per milliliter/mL), BBIBP-CorV (from 69.5 to 51.5 BAU/mL), and ChAdOx1 nCoV-19 (from 69.2 to 58.BAU/mL) vaccines. The highest percentage of T cells specific to COVID-19 vaccine was found in individuals who received BNT162b2 (88.5%). CONCLUSION All four vaccines evaluated in this study showed effectiveness against asymptomatic COVID-19 infection, symptomatic infection, hospitalization, and death. Furthermore, BNT162b2, BBIBP-CorV, and ChAdOx1 nCoV-19 induced high levels of immunology markers within one month of vaccination.
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Affiliation(s)
- Derar H Abdel-Qader
- Faculty of Pharmacy & Medical Sciences, University of Petra, Amman 11196, Jordan
- Al Rashid Hospital Center, Amman 11623, Jordan
| | | | - Jennifer Silverthorne
- Division of Pharmacy & Optometry, The University of Manchester, Manchester M13 9PL, UK
| | - Chuenjid Kongkaew
- Department of Pharmacy Practice, Naresuan University, Phitsanulok 65000, Thailand
| | - Ahmad Z Al Meslamani
- AAU Health and Biomedical Research Center, Al Ain University, Abu Dhabi P.O. Box 112612, United Arab Emirates
- College of Pharmacy, Al Ain University, Abu Dhabi P.O. Box 64141, United Arab Emirates
| | - Wail Hayajneh
- School of Medicine, St. Louis University, St. Louis, MO 63104, USA
- School of Medicine, Jordan University of Science & Technology, Irbid 3030, Jordan
| | | | - Salim Hamadi
- Faculty of Pharmacy & Medical Sciences, University of Petra, Amman 11196, Jordan
| | - Luay Abu-Qatouseh
- Faculty of Pharmacy & Medical Sciences, University of Petra, Amman 11196, Jordan
| | - Riad Awad
- Faculty of Pharmacy & Medical Sciences, University of Petra, Amman 11196, Jordan
| | - Mohannad Al Nsour
- Eastern Mediterranean Public Health Network (EMPHNET), Amman 11195, Jordan
| | | | | | | | - Nathir M Obeidat
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | | | | | | | - Mohammad Asad
- Eastern Mediterranean Public Health Network (EMPHNET), Amman 11195, Jordan
| | - Salah AbuRuz
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, The United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Department of Clinical Pharmacy, Faculty of Pharmacy, The University of Jordan, Amman 11942, Jordan
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Aoshima M, Ohfuji S. Real-world vaccine effectiveness of mRNA vaccines for SARS-CoV-2; a test-negative case-control study in a medium-sized clinic. Hum Vaccin Immunother 2022; 18:2147353. [PMID: 36459056 PMCID: PMC9762800 DOI: 10.1080/21645515.2022.2147353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Although nationwide immunization with SARS-CoV-2 mRNA vaccines began in February 2021, the evaluation of vaccine effectiveness (VE) using a test-negative design has not been conducted adequately in Japan. To evaluate the effectiveness of the SARS-CoV-2 mRNA vaccines, we conducted a test-negative case-control study during the periods dominated by the Delta and Omicron variants. In total, 518 and 358 adult participants with COVID-19-like symptoms were tested for the virus from August to October 2021 (Delta variant predominance) and in February 2022 (Omicron variant surge), at the Kawasaki Saiwai Clinic. During Delta variant predominance, the effectiveness of full vaccination was 90.4% (95% confidence interval [CI]: 82.1-94.8) and 97.3% (95% CI: 71.7-99.7) against all COVID-19 and moderate-to-severe disease, respectively. However, partial vaccination failed to show effectiveness against moderate-to-severe COVID-19. The effectiveness of the mRNA vaccines against all COVID-19 infection declined to 16.1% (95% CI: -81.0 to 61.1) in February 2022. Our results indicated that, although mRNA vaccines showed significant preventive effects against all COVID-19 during Delta variant predominance, these preventive effects waned during Omicron variant surge. To the best of our knowledge, this is the first study that evaluated VE in the Japanese population during both periods.
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Affiliation(s)
- Masahiro Aoshima
- Department of Pulmonology, Sekishinkai KawasakiSaiwai Clinick, Kawasaki, Japan,CONTACT Masahiro Aoshima Department of Pulmonology, Sekishinkai KawasakiSaiwai Clinick, 1-27-1 Minamisaiwai-cho, Saiwai-ku, Kawasaki212-0016, Japan
| | - Satoko Ohfuji
- Department of Public Health, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
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Effectiveness of messenger RNA vaccines against infection with SARS-CoV-2 during the periods of Delta and Omicron variant predominance in Japan: the Vaccine Effectiveness, Networking, and Universal Safety (VENUS) study. Int J Infect Dis 2022; 125:58-60. [PMID: 36220547 PMCID: PMC9547653 DOI: 10.1016/j.ijid.2022.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/22/2022] [Accepted: 10/02/2022] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES We aimed to evaluate COVID-19 messenger RNA vaccine effectiveness during the Delta- and Omicron-predominant periods in Japan. METHODS We conducted a population-based cohort study among individuals aged 16-64 years during two periods: the Delta-predominant period (July 1-December 31, 2021) and the Omicron-predominant period (January 1-March 29, 2022). RESULTS When comparing individuals who were vaccinated with those who were unvaccinated, the effectiveness of a second dose against symptomatic infection was 89.8% (95% confidence interval [CI]: 80.5-94.7%) during the Delta-predominant period and 21.2% (95% CI: 11.0-30.3%) during the Omicron-predominant period. The effectiveness of a third dose against symptomatic infection was 71.8% (95% CI: 60.1-80.1%) during the Omicron-predominant period. CONCLUSION Vaccine effectiveness against symptomatic infection decreased during the Omicron-predominant period but was maintained by a third dose.
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Mimura W, Ishiguro C, Maeda M, Murata F, Fukuda H. Effectiveness of a Third Dose of COVID-19 mRNA Vaccine During the Omicron BA.1- and BA.2-Predominant Periods in Japan: The VENUS Study. Open Forum Infect Dis 2022; 9:ofac636. [PMID: 36589480 PMCID: PMC9792082 DOI: 10.1093/ofid/ofac636] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022] Open
Abstract
Background Vaccine effectiveness against the severe acute respiratory syndrome coronavirus 2 Omicron BA.2 sublineage in Japan is unknown. We assessed the effectiveness of a third dose of COVID-19 mRNA vaccine compared with that of 2 doses. Methods We performed a population-based cohort study using a municipality database located in the Chubu region of Japan during the Omicron BA.1- and BA.2-predominant periods (January 1-March 31, 2022 and April 1-27, 2022, respectively). We included residents aged ≥16 years who received a second vaccine dose at ≥14 days before the start of each period, regardless of the third dose. We compared the data at 14 days after the second and third dose and at 2-week intervals from 14 days to 10 weeks after the third dose using a Cox regression model. Vaccine effectiveness was defined as (1 - hazard ratio) × 100 (%). Results In total, 295 705 and 288 184 individuals were included in the BA.1- and BA.2-predominant periods, respectively. The effectiveness of a third dose against infection was 62.4% and 48.1% in the BA.1- and BA.2-predominant periods, respectively. Vaccine effectiveness at 2-3 weeks and ≥10 weeks after the third dose decreased from 63.6% (95% confidence interval [CI], 56.4-69.5%) to 52.9% (95% CI, 41.1-62.3%) and from 54.5% (95% CI, 3.0-78.7%) to 40.1% (95% CI, 15.1-57.7%) in the BA.1- and BA.2-predominant periods, respectively. Conclusions A third dose was moderately effective against BA.1 and BA.2 sublineages, but its effectiveness decreased by approximately 10% age points from 2-3 weeks to ≥10 weeks after the third vaccination.
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Affiliation(s)
- Wataru Mimura
- Section of Clinical Epidemiology, Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Chieko Ishiguro
- Correspondence: Chieko Ishiguro, MPH, PhD, Section of Clinical Epidemiology, Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan ()
| | - Megumi Maeda
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Fumiko Murata
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
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