Table 1.
Characteristics of measles cases during the endemic (1998-2002) and epidemic (2010) periods in Zambia
| Variable | 1998-2002 | 2010 |
|---|---|---|
| Median (25 th percentile, 75 th percentile) | Median (25 th percentile, 75 th percentile) | |
| Median age in months (IQR) | 14 (9, 37) | 12 (7, 29) |
| Male | 613 (54%) | 588 (52%) |
| Measles vaccination status | ||
| Not Vaccinated | 563 (50%) | 618 (55%) |
| Vaccinated | 209 (19%) | 221 (20%) |
| Unknown | 357 (32%) | 286 (25%) |
| HIV infection status | ||
| Not infected | 931 (84%) | 905 (80%) |
| Infected | 164 (15%) | 41 (4%) |
| Exposed | NA | 100 (9%) |
| Unknown | 11 (1%) | 80 (7%) |
Note: NA denotes “Not Applicable” in that during the 1998-2002 measles endemic period the HIV infection status of children admitted to University Teaching Hospital, Lusaka, Zambia was not available.