@bubu12
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)32651-9/fulltext#coronavirus-linkback-header
Infectivity of
asymptomatic versus symptomatic COVID-19
628 people with
COVID-19 were included in this analysis (appendix). 3790 people were close contacts of an index case and were
quarantined. On average, 6·0 people from the community were quarantined per
index case. Overall, 89 (2%) of 3790 close community contacts developed
COVID-19 while in quarantine. Of these, 50
(56%) of 89 contacts were quarantined
because of an asymptomatic index case, whereas 39 (44%) contacts were
quarantined because of a symptomatic case.43 (48%) contacts were quarantined
because of a seronegative index case, whereas 46 (52%) were quarantined because
of a seropositive index case.
50 / 3.790 = 1,31%