COVID: high risk tranmission from household contacts
A study from Singapore found that household contacts in particular seem to have higher rates of SARS-CoV-2 transmission, frequently asymptomatic (see covid household contacts lancetinfdis2020 in dropbox, or doi.org /10.1016/ S1473-3099(20)30833-1) Details : -- retrospective cohort study of all close contacts of confirmed Covid-19 cases, between January and April. -- 7770 people close contacts were involved (1803 household contacts, 2319 work contacts, and 3588 social contacts), linked to 1114 PCR-confirmed index cases. There were also 2626 transport contacts (eg, in the same car), though these were not considered close contacts -- median age of contacts 33yo, 52% female; median age of index case 39 yo -- Close contacts: -- household contact: those who shared a residence with the index Covid case (26% of household contacts underwent subsequent symptom-based PCR testing) -- non-household close conta...