We constructed an age-to-age infection matrix to characterize the household transmission pattern of coronavirus disease 2019 (COVID-19) in Korea. Among 4,048 household clusters, within-age group infection dominated the overall household transmissions. Transmission of severe acute respiratory syndrome coronavirus 2 was more common from adults to children than from children to adults.
Keywords: Coronavirus disease 2019; Epidemiology; Household; SARS-CoV-2; Transmission.
© 2021 The Korean Academy of Medical Sciences.