Risk of SARS-CoV-2 infection and subsequent hospital admission and death at different time intervals since first dose of COVID-19 vaccine administration, Italy, 27 December 2020 to mid-April 2021.
Euro Surveill
; 26(25)2021 Jun.
Article
in English
| MEDLINE | ID: covidwho-1288763
ABSTRACT
To assess the real-world impact of vaccines on COVID-19 related outcomes, we analysed data from over 7 million recipients of at least one COVID-19 vaccine dose in Italy. Taking 0-14 days post-first dose as reference, the SARS-CoV-2 infection risk subsequently decreased, reaching a reduction by 78% (incidence rate ratios (IRR) 0.22; 95% CI 0.21-0.24) 43-49 days post-first dose. Similarly, hospitalisation and death risks decreased, with 89% (IRR 0.11; 95% CI 0.09-0.15) and 93% (IRR 0.07; 95% CI 0.04-0.11) reductions 36-42 days post-first dose. Our results support ongoing vaccination campaigns.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Vaccines
/
COVID-19
Type of study:
Observational study
/
Prognostic study
Topics:
Vaccines
Limits:
Humans
Country/Region as subject:
Europa
Language:
English
Journal subject:
Communicable Diseases
Year:
2021
Document Type:
Article
Affiliation country:
1560-7917.ES.2021.26.25.2100507
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