From: Co-infection in unvaccinated infants with acute pertussis in Western China (2018–2019): pathogen distribution and impact on disease severity
Pathogen
0–3
3–6
6–12
P value
N = 110
N = 52
N = 12
Bacteria co-infection
62 (56.4%)
25 (48.1%)
9 (75.0%)
0.220
Virus co-infection
26 (23.6%)
14 (26.9%)
2 (16.7%)
0.740
Bacteria-Virus co-infection
22 (20.0%)
13 (25.0%)
1 (8.3%)
0.420