27 new school outbreaks were reported by MDHHS on Monday, September 28.
| School Name | County | School Type | Cases |
|---|---|---|---|
| Atherton Elementary School | Genesee | Pre-school - elementary | 3 |
| Bronson Community Scool | Branch | High school | 4 |
| Carlson High School | Wayne | High school | 2 |
| Carson City Elementary | Montcalm | Pre-school - elementary | 6 |
| Chapman Elementary School | Wayne | Pre-school - elementary | 2 |
| Chippewa Valley Schools Administration | Macomb | Pre-school - elementary | 2 |
| Coldwater High School | Branch | High school | 6 |
| Concordia University | Washtenaw | College - undergraduate | 5 |
| Escanaba Jr/Sr High | Delta | Junior high/middle school | 4 |
| Hillsdale College | Hillsdale | College - undergraduate | 6 |
| Holy Name Catholic School | Delta | Pre-school - elementary | 3 |
| Indian Hills Elementary | Macomb | Pre-school - elementary | 2 |
| Kent City Elementary | Kent | Pre-school - elementary | 3 |
| Lakeshore High School | Berrien | High school | 2 |
| Leelanau School | Leelanau | High school | 4 |
| Macomb Intermediate School District | Macomb | Pre-school - elementary | 2 |
| Northern Michigan University Men's basketball | Marquette | College - undergraduate | 2 |
| Northern Michigan University Women's Lacrosse | Marquette | College - undergraduate | 2 |
| Oakland University | Oakland | College - undergraduate | 7 |
| Olivet College | Eaton | College - undergraduate | 2 |
