Age (months) | Â | China | Â | Korea | Â | Vietnam |
---|---|---|---|---|---|---|
N | Incidence rate (95% CI) | N | Incidence rate (95% CI) | N | Incidence rate (95% CI) | |
< 6 | 5 | 14.6 (4.5-47.2) | 7 | 27.2 (9.9-74.2) | 11 | 15.5 (3.6-67.2) |
7-11 | 1 | 3.4 (0.4-33.0) | 0 | 0 | 9 | 29.1 (8.0-106.0) |
12-23 | 0 | 0 | 2 | 4.5 (0.8-25.8) | 5 | 13.7 (3.8-50.1) |
24-59 | 0 | 0 | 7 | 4.8 (1.8-13.1) | 6 | 2.4 (0.5-10.2) |
overall | 6 | 2.1 (0.7-6.2) | 16 | 6.8 (3.5-13.5) | 31 | 7.4 (3.6-15.3) |