| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-12-08 | 2021-12-09 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-12-07 | 2021-12-08 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-12-06 | 2021-12-07 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-12-03 | 2021-12-06 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-12-02 | 2021-12-03 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-12-01 | 2021-12-02 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-11-30 | 2021-12-01 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-11-29 | 2021-11-30 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-11-26 | 2021-11-29 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-11-25 | 2021-11-26 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 2 | 0 | 0 | 2 |
| 2021-11-24 | 2021-11-25 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-11-23 | 2021-11-24 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-11-22 | 2021-11-23 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-04-14 | 2021-04-15 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-04-09 | 2021-04-12 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-26 | 2021-03-29 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-25 | 2021-03-26 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-24 | 2021-03-25 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-23 | 2021-03-24 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-22 | 2021-03-23 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-19 | 2021-03-22 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-18 | 2021-03-19 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-17 | 2021-03-18 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-16 | 2021-03-17 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-15 | 2021-03-16 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-12 | 2021-03-15 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-05 | 2021-03-08 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-04 | 2021-03-05 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-03 | 2021-03-04 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-02 | 2021-03-03 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-03-01 | 2021-03-02 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-02-26 | 2021-03-01 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-02-25 | 2021-02-26 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-02-24 | 2021-02-25 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-02-23 | 2021-02-24 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2021-02-22 | 2021-02-23 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-12 | 2020-11-13 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-11 | 2020-11-12 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-10 | 2020-11-11 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-09 | 2020-11-10 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-06 | 2020-11-09 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-05 | 2020-11-06 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-04 | 2020-11-05 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-03 | 2020-11-04 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-11-02 | 2020-11-03 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |
| 2020-10-30 | 2020-11-02 | Grand Erie District School Board | Dunnville Secondary School | Haldimand County | 1 | 0 | 0 | 1 |