TABLE 2:
Presentation and hospital course according to prior immune status for children admitted to a Canadian Immunization Monitoring Program ACTive (IMPACT) centre between January 1, 1991 and March 31, 1996 for chickenpox or a related complication
| Prior health status | Healthy | Immunocompromised |
|---|---|---|
| Number | 488 | 298 |
| Mean age (years) (range) | 4.0 (0.1 to 17.4) | 6.4 (0.1 to 20) |
| VZIG prophylaxis | NA | 38.5% |
| Days of rash prior to hospital admission | 5 | 2 |
| Percentage with varicella complication at admission | 90% | 20% |
| Hospital course | ||
| Admitted to intensive care | 5% | 3% |
| Required mechanical ventilation | 2% | 1% |
| Treated with acyclovir in hospital | 24% | 98% |
| Median days in hospital (range) | 4 (1 to 57) | 6 (1 to 50) |
| Mortality | 0.2% (1) | 0.5% (1) |