Table 2.
Association of respiratory viruses and pertussis infections
| Virus | Pertussis PCR-positive cases (n = 202) | Pertussis PCR-negative cases (n = 4085) | OR (95% CI) | Age-adjusted OR (95% CI) |
|---|---|---|---|---|
| Respiratory syncytial virus | 5 (2.5) | 751 (18.4) | 0.12 (0.05–0.30) | 0.11 (0.04–0.27) |
| Human rhinovirus | 52 (25.7) | 337 (8.2) | 3.71 (2.34–5.89) | 8.89 (4.75–16.64) |
| Human bocavirus | 17 (8.4) | 379 (9.3) | 0.70 (0.40–1.25) | – |
| Human metapneumovirus | 2 (1.0) | 36 (0.9) | 1.43 (0.24–8.65) | – |
| Influenza virus A/B | 3 (1.5) | 44 (1.1) | 2.16 (0.43–10.8) | – |
| Adenovirus | 0 | 52 (1.3) | – | – |
| Parainfluenza virus I/II/III | 12 (5.9) | 268 (6.6) | 0.91 (0.46–1.84) | – |
| At least 1 respiratory virus | 81 (40.1) | 1781 (43.6) | 0.86 (0.62–1.21) | – |
Data are presented as No. (%) unless otherwise indicated
CI confidence interval, OR odds ratio, PCR polymerase chain reaction
OR (95% CI) was presented bold when significance was found between the two groups