ประสิทธิผลของการได้รับวัคซีนโควิด-19 ครบ 3 เข็มในการลดการเสียชีวิตของผู้สูงอายุที่ติดเชื้อโควิด-19 ในจังหวัดสมุทรปราการ

Rungsan Wongboonnak

Authors

Rungsan Wongboonnak Samut Prakan Provincial Public Health Office

Keywords:

COVID-19 vaccine effectiveness, elderly, COVID-19 infection, COVID-19 related mortality, 3-dose vaccine

Abstract

This study retrospectively investigated the effectiveness of the vaccine in real-life situations. The objective focused on the reduction in deaths of elderly people infected with COVID-19 who received the complete 3-dose COVID-19 vaccine compared to those who did not. Data were collected from the electronic database of the Samut Prakan Provincial Health Office, linked to the Ministry of Public Health’s database on vaccination. Data were collected retrospectively from January 1, 2022 to March 31, 2022. Result: The study found that there were 5,891 COVID-19 elderly individuals resulting in 56 deaths. Of those 2,236 patients who received the complete 3-dose vaccine faced 5 deaths, while 3,655 who did not face 51 deaths; odds ratio of 0.16 (95% CI = 0.06-0.40) or an 84% reduction in mortality (p < 0.001). Conclusion: Elderly individuals who received the complete 3-dose vaccine had a reduced risk of mortality if contracted COVID-19 in real-life situations. Therefore, the results should be disseminated to encourage complete 3-dose COVID-19 vaccine in elderly individuals.

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