Evaluation of BNT162b2 Vaccine Effectiveness in Galicia, Northwest Spain.
Int J Environ Res Public Health
; 19(7)2022 03 29.
Article
in English
| MEDLINE | ID: covidwho-1847319
ABSTRACT
Investigating vaccine effectiveness (VE) in real-world conditions is crucial, especially its variation across different settings and populations. We undertook a test-negative control study in Galicia (Northwest Spain) to assess BNT162b2 effectiveness against acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection as well as COVID-19 associated hospitalization, intensive care unit (ICU) admission and mortality. A total of 44,401 positive and 817,025 negative SARS-CoV-2 test results belonging to adults were included. Adjusted odds ratios of vaccination and their 95% confidence interval (CI) were estimated using multivariate logistic-regression models. BNT162b2 showed high effectiveness in reducing SARS-CoV-2 infections in all age categories, reaching maximum VE ≥ 14 days after administering the second dose [18-64 years VE = 92.9% (95%CI 90.2-95.1); 65-79 years VE = 85.8% (95%CI 77.3-91.9), and ≥80 years VE = 91.4% (95%CI 87.9-94.1)]. BNT162b2 also demonstrated effectiveness in preventing COVID-19 hospitalization for all age categories, with VE more pronounced for those aged ≥80 years [VE = 60.0% (95%CI 49.4-68.3)]. Moreover, there was a considerable reduction in ICU admission [VE = 88.0% (95%CI 74.6-95.8)] and mortality [VE = 38.0% (95%CI 15.9-55.4)] in the overall population. BNT162b2 showed substantial protection against SARS-CoV-2 infections and COVID-19 severity. Our findings would prove useful for systematic reviews and meta-analysis on COVID-19 VE.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
/
BNT162 Vaccine
Type of study:
Experimental Studies
/
Observational study
/
Prognostic study
/
Reviews
/
Systematic review/Meta Analysis
Topics:
Vaccines
Limits:
Adult
/
Humans
Country/Region as subject:
Europa
Language:
English
Year:
2022
Document Type:
Article
Affiliation country:
Ijerph19074039
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