Table 2. Comparison of Rift Valley fever virus IgG prevalence by age group, Botswana*.
| Age group | Age, y | %, 95% CI | Adolescent | Young adult | Adult | Middle-aged | Aged |
|---|---|---|---|---|---|---|---|
| Adolescent | 13–19 | 2 (0–8) | NA | NA | NA | NA | NA |
| Young adult | 20–24 | 2 (0–5) | 1.00 | NA | NA | NA | NA |
| Adult | 25–44 | 5 (3–6) | 0.404 | 0.158 | NA | NA | NA |
| Middle-aged | 45–64 | 9 (5–15) | 0.0814 | 0.008 | 0.07 | NA | NA |
| Aged | 65–79 | 40 (20–64) | <0.001 | <0.001 | <0.001 | 0.007 | NA |
| Elderly |
>80 |
50 (22–78) |
<0.001
|
<0.001
|
<0.001
|
0.01
|
0.7 |
| *Bold indicates significance (p value <0.05 by χ² test). NA, not applicable. | |||||||