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| Weeks after onset | Laboratory confirmed cases | Household contacts |
| Day of onset | 7 (3%) | 0 (0%) |
| 1st week | 44 (18%) | 3 (20%) |
| 2nd week | 64 (26%) | 4 (27%) |
| 3rd week | 43 (17%) | 2 (13%) |
| 4th week | 30 (12%) | 5 (33%) |
| 5th week | 26 (11%) | 0 (0%) |
| 6th week | 13 (5%) | 0 (0%) |
| 7th week | 7 (3%) | 1 (7%) |
| 8th week or over | 13 (5%) | 0 (0%) |
| 247 | 15 |
