From: Pertussis in infants: an underestimated disease
Diagnosis at admission
Patients (n = 215)
BP+ (n = 53)
Percent
Bronchiolitis
101
20
19.8
Apnea
41
8
19.5
Fever in infants
23
1
4.3
Suspected pertussis
22
16
72.7
Cough
19
42.1
Pneumonia
4
0
ALTE
5