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 |
7 |
51 |
| Sex, no. (%) | ||
| M | 5 (71.4) | 18 (35.3) |
| F |
2 (28.6) |
33 (64.7) |
| Age, y, median (IQR) |
25 (21–26) |
26 (22–40) |
| Underlying disease, no. (%)† |
0 |
3 (5.9) |
| Smoking status | ||
| Smoker | 0 | 0 |
| Ex-smoker | 1 (14.3) | 2 (3.9) |
| Nonsmoker |
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 |
NA |
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.