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Volume 27, Number 3—March 2021

Antibody Responses 8 Months after Asymptomatic or Mild SARS-CoV-2 Infection

Pyoeng Gyun Choe1, Kye-Hyung Kim1, Chang Kyung Kang, Hyeon Jeong Suh, EunKyo Kang, Sun Young Lee, Nam Joong Kim, Jongyoun YiComments to Author , Wan Beom ParkComments to Author , and Myoung-don Oh
Author affiliations: Seoul National University College of Medicine, Seoul, South Korea (P.G. Choe, C.K. Kang, H.J. Suh, E. Kang, S.Y. Lee, N.J. Kim, W.B. Park, M.-d. Oh); Pusan National University School of Medicine, Busan, South Korea (K.-H. Kim, J. Yi)

Main Article

Table 1

Clinical characteristics of 58 persons with asymptomatic or mildly symptomatic severe acute respiratory syndrome coronavirus 2 infection, South Korea*

Characteristic Asymptomatic Mildly symptomatic
Total no. persons
Sex, no. (%)
M 5 (71.4) 18 (35.3)
2 (28.6)
33 (64.7)
Age, y, median (IQR)
25 (21–26)
26 (22–40)
Underlying disease, no. (%)†
3 (5.9)
Smoking status
Smoker 0 0
Ex-smoker 1 (14.3) 2 (3.9)
6 (85.7)
49 (96.1)
Signs/symptoms, no. (%)
Febrile/chilling sense NA 8 (15.7)
Myalgia NA 5 (9.8)
Headache NA 13 (25.5)
Cough NA 20 (39.2)
Sputum NA 33 (64.7)
Rhinorrhea NA 25 (49.0)
Sore throat NA 3 (5.9)
Chest discomfort/dyspnea
4 (7.8)
Duration of PCR positivity, d, median (IQR)
29 (25–34)
24 (19–34)
Days from symptom onset to blood sampling, median (IQR)‡ 231 (231–233) 234 (231–234)

*IQR, interquartile range; NA, not applicable.
†One each: hypertension, diabetes mellitus, asthma.
‡For asymptomatic patients, time from the first PCR-positive result to blood sampling.

Main Article

1These first authors equally contributed to this article.

Page created: December 22, 2020
Page updated: February 21, 2021
Page reviewed: February 21, 2021
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