A meta-analysis of 54 studies including 77,758 participants estimated an overall household secondary transmission rate of SARS-CoV-2 of 17% (95% CI 14%-19%). The rate was higher from symptomatic index cases than from asymptomatic index cases (18% vs. 1%), to adult contacts than to child contacts (28% vs. 17%), to spouses than to other family contacts (38% vs. 18%), and in households with 1 contact than in households with 3 or more contacts (42% vs. 23%). The authors suggest that households will continue to be important venues for transmission as individuals with suspected or confirmed infections are instructed to isolate at home.<\/p>\n
Madewell et al. (Dec 14, 2020). Household Transmission of SARS-CoV-2: A Systematic Review and Meta-Analysis. JAMA Network Open<\/i>. https:\/\/doi.org\/10.1001\/jamanetworkopen.2020.31756<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" A meta-analysis of 54 studies including 77,758 participants estimated an overall household secondary transmission rate of SARS-CoV-2 of 17% (95% CI 14%-19%). The rate was higher from symptomatic index cases than from asymptomatic index cases (18% vs. 1%), to adult contacts than to child contacts (28% vs. 17%), to spouses than to other family contacts…<\/p>\n