Coverage and effectiveness of COVID-19 vaccines among people aged 60 years and above in Changning District of Shanghai
Journal Title: Shanghai Journal of Preventive Medicine - Year 2023, Vol 35, Issue 5
Abstract
ObjectiveTo assess the coverage and effectiveness of COVID-19 vaccines in the elderly.MethodsThis study was conducted in Changning District of Shanghaiï¼ targeting people aged 60 years and above. Vaccination data between 21 December 2020 and 28 February 2022 was retrieved from the Shanghai Collective Immunization System. Information on confirmed cases of COVID-19 from March 2022 through May 2022 was collected from the National Notifiable Diseases Reporting System. Vaccine effectiveness was calculated using the screening method.ResultsAs of 28 February 2022ï¼ 69.89% of people aged â¥60 years had received â¥1-dose vaccineï¼ 63.80% had received full primary vaccination and 31.91% had received a booster dose. Vaccination coverage declined over ageï¼ with the lowest coverage in the elderly aged â¥80 years. Moreoverï¼ COVID-19 vaccination provided the highest protection against severe/critical illness and death due to the Omicron variants in the elderly aged â¥60 years. Full primary vaccination showed 96.15%ï¼95%CIï¼84.15â99.06ï¼of vaccine effectiveness and booster vaccination showed 100% of the effectiveness against severe/critical COVID-19 and death.ConclusionsFull primary and booster vaccination coverage in the elderly is lowï¼ especially in those aged 80 and above. Our study finds high protection against COVID-19 associated severe/critical illness and death from both full primary and booster vaccination of inactivated COVID-19 vaccines in the elderly aged â¥60 years.
Authors and Affiliations
PANG Hong,HE Xiaoding,CHEN Jinyan,SHI Wei,JIN Bei,XUE Jing,ZHAO Wensui,JIANG Qingwu,
Keywords
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