#Transmission of #COVID-19 in 282 #clusters in Catalonia, Spain: a cohort study - The Lancet Infectious Diseases
▻https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30985-3/abstract
In our study, the viral load of index cases was a leading driver of SARS-CoV-2 transmission. The risk of symptomatic COVID-19 was strongly associated with the viral load of contacts at baseline and shortened the incubation time of COVID-19 in a dose-dependent manner.