Contact Tracing during Coronavirus Disease Outbreak, South Korea, 2020

Young-Joon Park, Young June Choe, Ok Park, Shin Young Park, Young‐Man Kim, Jieun Kim, Sanghui Kweon, Yeonhee Woo, Jin Gwack, Seong Sun Kim,

Emerging infectious diseases · 2020 · 551 citations · 9 references

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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.

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