Department of Community Health spokeswoman Angela Minicuci tells The Associated Press Friday that the number of pediatric deaths remains at four.
She says there have been adult deaths, but those aren't required to be reported to the state.
The flu is a contagious respiratory illness with symptoms that include fever, headache, fatigue, cough, stuffy or runny nose and muscle aches.
Minicuci says this flu season in Michigan has been worse than some others and is "not slowing down yet." Southwest, central and southeast Michigan have been hardest hit.