Volume 19, Number 3—March 2013
Dispatch
Virulence of Pertactin-Negative Bordetella pertussis Isolates from Infants, France
Hélène Bodilis1 and Nicole Guiso
Table 2
Clinical signs and symptoms of vaccinated and unvaccinated pertussis patients, France, 2004–2007
| Characteristics |
No. patients/no. with characteristic (%) |
p value* |
|
|---|---|---|---|
| Not vaccinated, n = 46 |
Received 1–2 doses, n = 12 |
||
| Intensive care admission | 18/34 (53) | 0/11 (0) | 0.001 |
| Apnea | 15/25 (60) | 1/7 (14) | 0.08 |
| Cyanosis/desaturation | 24/28 (86) | 5/8 (62) | 0.167 |
| Syncopal episodes | 12/26 (46) | 0/8 (0) | 0.03 |
| Bradycardia | 15/21 (71) | 3/6 (50) | 0.367 |
| Deterioration of general condition | 12/29 (41) | 2/8 (25) | 0.68 |
| Malignant pertussis | 1/29 (3) | 0/8 (0) | 1.0 |
*By Fisher exact test.
1Current affiliation: Cochin Hospital, Paris, France
