| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-09-20 | 2021-09-21 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-09-17 | 2021-09-20 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-09-16 | 2021-09-17 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-09-15 | 2021-09-16 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-09-14 | 2021-09-15 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-09-13 | 2021-09-14 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 0 | 1 | 0 | 1 |
| 2021-04-07 | 2021-04-08 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-04-06 | 2021-04-07 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-04-01 | 2021-04-06 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-03-31 | 2021-04-01 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-03-30 | 2021-03-31 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-03-29 | 2021-03-30 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-03-26 | 2021-03-29 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |
| 2021-03-25 | 2021-03-26 | Catholic District School Board of Eastern Ontario | St. Thomas Aquinas Catholic High School | Russell | 4 | 0 | 0 | 4 |