Table 1.
Age distribution of index cases of household outbreaks. Index cases are clustered into 4 age groups and according to whether they led to onward transmission in the household or not.
| Age group | RSV A | RSV B | ||
|---|---|---|---|---|
| No. index cases (number of symptomatic cases) | No. index cases leading to onward transmission (number of symptomatic cases) | No. index cases (number of symptomatic cases) | No. index cases leading to onward transmission (number of symptomatic cases) | |
| < 1 | 9 (8) | 3 (3) | 14 (14) | 9 (9) |
| 1–4 | 5 (3) | 1 (1) | 12 (8) | 6 (4) |
| 5–13 | 16 (10) | 7 (7) | 18 (9) | 5 (5) |
| ≥ 13 | 9 (3) | 2 (1) | 16 (3) | 3 (0) |
| Total | 39 (24) | 13 (12) | 60 (34) | 23 (18) |