Alliance for Pandemic Preparedness

November 5, 2020

Household Transmission of SARS-COV-2 Insights from a Population-Based Serological Survey

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  • [Pre-print, not peer-reviewed] A household serological survey conducted in Geneva from April to June (n=2,267 households) estimated a 17.2% risk of being infected with SARS-CoV-2 by a single household member compared to a 5.1% cumulative infection risk (through June 30th) from exposures outside the household. Infection risk from an infected household member increased with age, while working-age adults (20-49 years) had the highest infection risk from outside the household. Asymptomatic household members were less likely to transmit to another member compared to those reporting symptoms.

Bi et al. (Nov 4, 2020). Household Transmission of SARS-COV-2 Insights from a Population-Based Serological Survey. Pre-print downloaded Nov. 5 from https://doi.org/10.1101/2020.11.04.20225573