Table 6. Virology results in 202 study participants.
| Virus | Asymptomatic Participants (n = 112) | Symptomatic Participants (n = 90) | p-Value | ||
| Ct Value, Median (IQR) | n (Percent) | Ct Value, Median (IQR) | n (Percent) | ||
| Influenza A virus | 20.1 | 1 (0.9) | 23.0 (18.0–33.8) | 6 (6.7) | 0.03 |
| Influenza B virus | Undetectable | 0 (0.0) | 26.0 | 1 (1.1) | 0.26 |
| Human metapneumovirus | 36.7–38.7 | 2 (1.8) | 24.6 (23.0–30.5) | 7 (7.8) | 0.10 |
| Respiratory syncytial virus A | 27.9 | 1 (0.9) | 22.0 (20.0–29.6) | 11 (12.2) | 0.001 |
| Respiratory syncytial virus B | 35.4 | 1 (0.9) | 22.0 (17.3–29.5) | 9 (10.0) | 0.003 |
| Parainfluenzavirus 1 | 36.3 (22.0–37.6) | 7 (6.3) | 25.3 (20.0–26.5) | 3 (3.3) | 0.34 |
| Parainfluenzavirus 2 | 35.8 (34.6–35.9) | 3 (2.7) | 31.1 | 1 (1.1) | 0.43 |
| Parainfluenzavirus 3 | 20.7. 35.8 | 2 (1.8) | 30.6 (25.1–39.6) | 3 (3.3) | 0.48 |
| Parainfluenzavirus 4 | 36.5 (31.9–37.4) | 10 (8.9) | 38.7 | 1 (1.1) | 0.02 |
| Rhinovirus | 26.5 (23.1–31.1) | 35 (31.2) | 24.7 (22.3–29.4) | 17 (18.9) | 0.04 |
| Coronavirus 229E | Undetectable | 0 (0.0) | 17.6 | 1 (1.1) | 0.26 |
| Coronavirus OC43 | 35.6 (28.7–37.3) | 5 (4.5) | 29.0 (24.1–32.9) | 5 (5.6) | 0.72 |
| Coronavirus NL63 | 37.5 (34.8–38.6) | 6 (5.4) | 27.5 (27.0–38.0) | 7 (7.8) | 0.49 |
| Bocavirus | 30.9 (26.5–34.0) | 16 (14.3) | 32.0 (28.8–34.0) | 3 (3.3) | 0.008 |
| Adenovirus | 31.9 (27.9–33.8) | 17 (15.2) | 27.0 (26.2–30.5) | 9 (10.0) | 0.28 |
The p-values compare the difference in prevalence between the two participant groups indicated by χ2 test.
Ct value, cycle threshold value; IQR, interquartile range.