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. 2020 Apr;11(2):81-84.
doi: 10.24171/j.phrp.2020.11.2.04.

Coronavirus Disease-19: Summary of 2,370 Contact Investigations of the First 30 Cases in the Republic of Korea

COVID-19 National Emergency Response Center, Epidemiology and Case Management Team, Korea Centers for Disease Control and Prevention

Coronavirus Disease-19: Summary of 2,370 Contact Investigations of the First 30 Cases in the Republic of Korea

COVID-19 National Emergency Response Center, Epidemiology and Case Management Team, Korea Centers for Disease Control and Prevention. Osong Public Health Res Perspect. 2020 Apr.

Abstract

Between January 24th and March 10th, a total of 2,370 individuals had contact with the first 30 cases of COVID-19. There were 13 individuals who contracted COVID-19 resulting in a secondary attack rate of 0.55% (95% CI 0.31-0.96). There were 119 household contacts, of which 9 individuals developed COVID-19 resulting in a secondary attack rate of 7.56% (95% CI 3.7-14.26).

Keywords: COVID-19; SARS-CoV-2; contact tracing; epidemiology.

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Conflict of interest statement

Conflicts of Interest There was no conflicts of interest to declare.

References

    1. COVID-19 National Emergency Response Center, Epidemiology and Case Management Team, Korea Centers for Disease Control and Prevention. Early Epidemiological and Clinical Characteristics of 28 Cases of Coronavirus Disease in South Korea. Osong Public Health Res Perspect. 2020;11(1):8–14. doi: 10.24171/j.phrp.2020.11.1.03. - DOI - PMC - PubMed
    1. Chan JFW, Yuan S, Kok KH, et al. A familial cluster of pneumonia associated with the 2019 novel coronavirus indicating person-to-person transmission: A study of a family cluster. Lancet. 2020;395(10223):514–23. doi: 10.1016/S0140-6736(20)30154-9. - DOI - PMC - PubMed
    1. Zhu Yu P, Zhang JZ, et al. A familial cluster of infection associated with the 2019 novel coronavirus indicating potential person-to-person transmission during the incubation period. J Infect Dis. 2020 [Epub ahead of print] Epub 2020 Feb 19. - PMC - PubMed
    1. Tian S, Hu N, Lou J, et al. Characteristics of COVID-19 infection in Beijing. J Infect. 2020;80(4):401–6. doi: 10.1016/j.jinf.2020.02.018. - DOI - PMC - PubMed
    1. Burke RM, Midgley CM, Dratch A, et al. Active Monitoring of Persons Exposed to Patients with Confirmed COVID-19 - United States, January-February 2020. MMWR Morb Mortal Wkly Rep. 2020;69(9):245–6. doi: 10.15585/mmwr.mm6909e1. - DOI - PMC - PubMed