We analysed 5,484 close contacts of coronavirus disease (COVID-19) cases in Italy, all tested for severe acute respiratory syndrome coronavirus 2 (SARSCoV-2). Infection fatality ratio was 0.43% (95% confidence interval (CI): 0.21–0.79) for individuals younger than 70 years and 10.5% (95% CI: 8.0–13.6) for older individuals. Risk of death after infection was 62% lower (95% CI: 31–80) in clusters identified after 16 March 2020 and 1.8-fold higher for males (95% CI: 1.03–3.16).

Age-specific SARS-CoV-2 infection fatality ratio and associated risk factors, Italy, February to April 2020

Filippo Trentini;Raffaella Piccarreta;Alessia Melegaro;
2020

Abstract

We analysed 5,484 close contacts of coronavirus disease (COVID-19) cases in Italy, all tested for severe acute respiratory syndrome coronavirus 2 (SARSCoV-2). Infection fatality ratio was 0.43% (95% confidence interval (CI): 0.21–0.79) for individuals younger than 70 years and 10.5% (95% CI: 8.0–13.6) for older individuals. Risk of death after infection was 62% lower (95% CI: 31–80) in clusters identified after 16 March 2020 and 1.8-fold higher for males (95% CI: 1.03–3.16).
2020
2020
Poletti, Piero; Tirani, Marcello; Cereda, Danilo; Trentini, Filippo; Guzzetta, Giorgio; Marziano, Valentina; Buoro, Sabrina; Riboli, Simona; Crottogini, Lucia; Piccarreta, Raffaella; Piatti, Alessandra; Grasselli, Giacomo; Melegaro, Alessia; Gramegna, Maria; Ajelli, Marco; Merler, Stefano
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11565/4033917
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