Contact Tracing during Coronavirus Disease Outbreak, South Korea, 2020
Young Joon Park
1, Young June Choe
1, Ok Park, Shin Young Park, Young-Man Kim, Jieun Kim, Sanghui Kweon, Yeonhee Woo, Jin Gwack, Seong Sun Kim, Jin Lee, Junghee Hyun, Boyeong Ryu, Yoon Suk Jang, Hwami Kim, Seung Hwan Shin, Seonju Yi, Sangeun Lee, Hee Kyoung Kim, Hyeyoung Lee, Yeowon Jin, Eunmi Park, Seung Woo Choi, Miyoung Kim, Jeongsuk Song, Si Won Choi, Dongwook Kim, Byoung-Hak Jeon, Hyosoon Yoo, Eun Kyeong Jeong

, on behalf of the COVID-19 National Emergency Response Center, Epidemiology and Case Management Team
Author affiliations: Korea Centers for Disease Control and Prevention, Cheongju, South Korea (Y.J. Park, O. Park, S.Y. Park, Y.-M. Kim, J. Kim, S. Kweon, Y. Woo, J. Gwack, S.S. Kim, J. Lee, J. Hyun, B. Ryu, Y.S. Jang, H. Kim, S.H. Shin, S. Yi, S. Lee, H.K. Kim, H. Lee, Y. Jin, E. Park, S.W. Choi, M. Kim, J. Song, S.W. Choi, D. Kim, B.-H. Jeon, H. Yoo, E.K. Jeong); Hallym University College of Medicine, Chuncheon, South Korea (Y.J. Choe)
Main Article
Table 2
Rates of coronavirus disease among household and nonhousehold contacts, South Korea, January 20–March 27, 2020
Index patient age, y
|
Household
|
|
Nonhousehold
|
No. contacts positive/no. contacts traced
|
% Positive (95% CI)
|
No. contact positive/no. contacts traced
|
% Positive (95% CI)
|
0–9 |
3/57 |
5.3 (1.3–13.7) |
|
2/180 |
1.1 (0.2–3.6) |
10–19 |
43/231 |
18.6 (14.0–24.0) |
|
2/226 |
0.9 (0.1–2.9) |
20–29 |
240/3,417 |
7.0 (6.2–7.9) |
|
138/12,393 |
1.1 (0.9–1.3) |
30–39 |
143/1,229 |
11.6 (9.9–13.5) |
|
70/7,407 |
0.9 (0.7–1.2) |
40–49 |
206/1,749 |
11.8 (10.3–13.4) |
|
161/7,960 |
2.0 (1.7–2.3) |
50–59 |
300/2,045 |
14.7 (13.2–16.3) |
|
166/9,308 |
1.8 (1.5–2.1) |
60–69 |
177/1,039 |
17.0 (14.8–19.4) |
|
215/7,451 |
2.9 (2.5–3.3) |
70–79 |
86/477 |
18.0 (14.8–21.7) |
|
92/1,912 |
4.8 (3.9–5.8) |
≥80
|
50/348
|
14.4 (11.0–18.4)
|
|
75/1,644
|
4.6 (3.6–5.7)
|
Total |
1,248/10,592 |
11.8 (11.2–12.4) |
|
921/48,481 |
1.9 (1.8–2.0) |
Main Article
Page created: June 30, 2020
Page updated: September 17, 2020
Page reviewed: September 17, 2020
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