Initial impact of SARS-Cov-2 vaccination on healthcare workers in Italy- Update on the 28th of March 2021.
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Mateo-Urdiales A, Del Manso M, Andrianou X, Spuri M, D'Ancona F, Filia A, Rota MC, Petrone D, Vescio MF, Riccardo F, Bella A, Pezzotti P, Fabiani M
Vaccine 39 (34) 4788-4792
[2021-08-09; online 2021-07-07]
In Italy, the COVID-19 vaccination campaign started in December 2020 with the vaccination of healthcare workers (HCW). To analyse the real-life impact that vaccination is having on this population group, we measured the association between week of diagnosis and HCW status using log-binomial regression. By the week 22-28 March, we observed a 74% reduction (PPR 0.26; 95% CI 0.22-0.29) in the proportion of cases reported as HCW and 81% reduction in the proportion of symptomatic cases reported as HCW, compared with the week with the lowest proportion of cases among HCWs prior to the vaccination campaign (31 August-7 September). The reduction, both in relative and absolute terms, of COVID-19 cases in HCWs that started around 30 days after the start of the vaccination campaign suggest that COVID-19 vaccines are being effective in preventing infection in this group.
PubMed 34253419
DOI 10.1016/j.vaccine.2021.07.003
Crossref 10.1016/j.vaccine.2021.07.003
pii: S0264-410X(21)00862-8
pmc: PMC8260579