| Dates | School | Confirmed Cases |
|---|
| Collected | Reported | School Board | School | Municipality | Student | Staff | Unspecified | Total |
|---|
| 2021-03-31 | 2021-04-01 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-30 | 2021-03-31 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-29 | 2021-03-30 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-26 | 2021-03-29 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-25 | 2021-03-26 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-24 | 2021-03-25 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-23 | 2021-03-24 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-22 | 2021-03-23 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 3 | 0 | 0 | 3 |
| 2021-03-08 | 2021-03-09 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-05 | 2021-03-08 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-04 | 2021-03-05 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-03 | 2021-03-04 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-02 | 2021-03-03 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-03-01 | 2021-03-02 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-02-26 | 2021-03-01 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-02-25 | 2021-02-26 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-02-24 | 2021-02-25 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2021-02-23 | 2021-02-24 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 1 | 0 | 0 | 1 |
| 2020-10-19 | 2020-10-20 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-16 | 2020-10-19 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-15 | 2020-10-16 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-14 | 2020-10-15 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-13 | 2020-10-14 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-09 | 2020-10-13 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-08 | 2020-10-09 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-07 | 2020-10-08 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |
| 2020-10-06 | 2020-10-07 | Niagara Catholic District School Board | St. Alfred Catholic Elementary School | St. Catharines | 0 | 1 | 0 | 1 |