| Setting/source of infection | Number of infected persons | Percentage |
|---|---|---|
| Household | 190 | 41.9% |
| Parents | 93 | NA |
| Grandparents | 13 | NA |
| Siblings | 7b | NA |
| Not specified | 77 | NA |
| Festivity/eventc | 38 | 8.4% |
| School/childcare | 15 | 3.3% |
| By pupil | 11 | NA |
| By teacher | 4 | NA |
| Church/community of faith | 14 | 3.1% |
| Travel associated | 5 | 1.1% |
| Others | 4 | 0.9% |
| Unknown or not availabled | 187 | 41.3% |
NA: not applicable; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2. a Of the 557 children aged 0–19 years, who were notified with SARS-CoV-2 infection, data on school attendance were available for 453. Information on these 453 children is presented in the table. b Seven children infected in three intra-household clusters. c Birthdays and other parties, weddings, funerals. d As close contacts of the cases were thoroughly examined, it is unlikely that cases in the ‘unknown’ category were infected in childcare facilities, schools or private households. |