| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-12-16 | 2021-12-17 | Halton Catholic District School Board | Canadian Martyrs Catholic Elementary School | Burlington | 1 | 0 | 0 | 1 |
| 2020-10-23 | 2020-10-26 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-22 | 2020-10-23 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-21 | 2020-10-22 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-20 | 2020-10-21 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-19 | 2020-10-20 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-16 | 2020-10-19 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-15 | 2020-10-16 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-14 | 2020-10-15 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2020-10-13 | 2020-10-14 | Hamilton-Wentworth Catholic District School Board | Canadian Martyrs Catholic Elementary School | Hamilton | 0 | 1 | 0 | 1 |
| 2021-10-20 | 2021-10-21 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-10-19 | 2021-10-20 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-18 | 2021-10-19 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-15 | 2021-10-18 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-14 | 2021-10-15 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-13 | 2021-10-14 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-12 | 2021-10-13 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-08 | 2021-10-12 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-07 | 2021-10-08 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 2 | 0 | 0 | 2 |
| 2021-10-06 | 2021-10-07 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-04-14 | 2021-04-15 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-04-09 | 2021-04-12 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-04-08 | 2021-04-09 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-04-07 | 2021-04-08 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-04-06 | 2021-04-07 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-30 | 2021-03-31 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-29 | 2021-03-30 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-26 | 2021-03-29 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-25 | 2021-03-26 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-24 | 2021-03-25 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-23 | 2021-03-24 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-22 | 2021-03-23 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-19 | 2021-03-22 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-18 | 2021-03-19 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-03-17 | 2021-03-18 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-12-07 | 2020-12-08 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-12-04 | 2020-12-07 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-12-03 | 2020-12-04 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-12-02 | 2020-12-03 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-12-01 | 2020-12-02 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-11-30 | 2020-12-01 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-11-27 | 2020-11-30 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-11-26 | 2020-11-27 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-11-25 | 2020-11-26 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2020-11-24 | 2020-11-25 | Waterloo Catholic District School Board | Canadian Martyrs Catholic Elementary School | Kitchener | 1 | 0 | 0 | 1 |
| 2021-10-01 | 2021-10-04 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-30 | 2021-10-01 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-29 | 2021-09-30 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-28 | 2021-09-29 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-27 | 2021-09-28 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-24 | 2021-09-27 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2021-09-23 | 2021-09-24 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 1 | 0 | 0 | 1 |
| 2020-12-18 | 2020-12-21 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 0 | 1 | 0 | 1 |
| 2020-12-17 | 2020-12-18 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 0 | 1 | 0 | 1 |
| 2020-12-16 | 2020-12-17 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 0 | 1 | 0 | 1 |
| 2020-12-15 | 2020-12-16 | York Catholic District School Board | Canadian Martyrs Catholic Elementary School | Newmarket | 0 | 1 | 0 | 1 |
| 2021-12-22 | 2021-12-23 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 1 | 0 | 2 |
| 2021-12-21 | 2021-12-22 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-12-20 | 2021-12-21 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-16 | 2021-11-17 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-15 | 2021-11-16 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-12 | 2021-11-15 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-11 | 2021-11-12 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-10 | 2021-11-11 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-09 | 2021-11-10 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-11-08 | 2021-11-09 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 4 | 0 | 0 | 4 |
| 2021-11-05 | 2021-11-08 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-11-04 | 2021-11-05 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 2 | 0 | 0 | 2 |
| 2021-11-03 | 2021-11-04 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-04-14 | 2021-04-15 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 1 | 0 | 2 |
| 2021-04-09 | 2021-04-12 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 1 | 0 | 2 |
| 2021-04-08 | 2021-04-09 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 1 | 0 | 2 |
| 2021-04-07 | 2021-04-08 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 1 | 0 | 2 |
| 2021-04-06 | 2021-04-07 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2021-04-01 | 2021-04-06 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2021-03-12 | 2021-03-15 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-11 | 2021-03-12 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-10 | 2021-03-11 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-09 | 2021-03-10 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-08 | 2021-03-09 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-05 | 2021-03-08 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-04 | 2021-03-05 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-03 | 2021-03-04 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-02 | 2021-03-03 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-01 | 2021-03-02 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-11-18 | 2020-11-19 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-11-17 | 2020-11-18 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-09 | 2020-10-13 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-08 | 2020-10-09 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-07 | 2020-10-08 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-06 | 2020-10-07 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-05 | 2020-10-06 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-02 | 2020-10-05 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-01 | 2020-10-02 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-09-30 | 2020-10-01 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-09-29 | 2020-09-30 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-09-28 | 2020-09-29 | Niagara Catholic District School Board | Canadian Martyrs Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |