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Contact Tracing during Coronavirus Disease Outbreak, South Korea, 2020

Young Joon Park et al. Emerg Infect Dis. 2020 Oct.

Abstract

We analyzed reports for 59,073 contacts of 5,706 coronavirus disease (COVID-19) index patients reported in South Korea during January 20-March 27, 2020. Of 10,592 household contacts, 11.8% had COVID-19. Of 48,481 nonhousehold contacts, 1.9% had COVID-19. Use of personal protective measures and social distancing reduces the likelihood of transmission.

Keywords: 2019 novel coronavirus disease; COVID-19; SARS-CoV-2; South Korea; contact tracing; coronavirus disease; pneumonia; respiratory diseases; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.

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