| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-12-22 | 2021-12-23 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 4 | 2 | 0 | 6 |
| 2021-12-21 | 2021-12-22 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 4 | 2 | 0 | 6 |
| 2021-12-20 | 2021-12-21 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 3 | 2 | 0 | 5 |
| 2021-12-16 | 2021-12-17 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-15 | 2021-12-16 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-14 | 2021-12-15 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-13 | 2021-12-14 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-10 | 2021-12-13 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-09 | 2021-12-10 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-08 | 2021-12-09 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-07 | 2021-12-08 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-06 | 2021-12-07 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-12-03 | 2021-12-06 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-10-08 | 2021-10-12 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-22 | 2021-03-23 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-19 | 2021-03-22 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-18 | 2021-03-19 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-17 | 2021-03-18 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-16 | 2021-03-17 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-15 | 2021-03-16 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-12 | 2021-03-15 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-11 | 2021-03-12 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-10 | 2021-03-11 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-09 | 2021-03-10 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 1 | 0 | 0 | 1 |
| 2021-03-04 | 2021-03-05 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-03-03 | 2021-03-04 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-03-02 | 2021-03-03 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-03-01 | 2021-03-02 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-26 | 2021-03-01 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-25 | 2021-02-26 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-24 | 2021-02-25 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-23 | 2021-02-24 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-22 | 2021-02-23 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-19 | 2021-02-22 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-02-18 | 2021-02-19 | Hamilton-Wentworth Catholic District School Board | St. Ann (Ancaster) Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |