It's back.

The first cases of the flu have been officially confirmed in Michigan.

The Michigan Department of Community Health's weekly flu report on October 17 showed no flu activity in Michigan.

The October 24 report was updated to report "sporadic" flu activity in Michigan.  A total of 4 cases have been confirmed.

WZZM13.com reports:

The department says the illnesses occurred in children and adults from two southeast Michigan counties. Three of the cases have been confirmed as influenza A (H1N1) 2009 viruses and one has been confirmed as being an influenza A (H3N2) virus.

The department is urging people to get flu shots. Officials say it's too early to tell what influenza viruses will circulate or how severe the influenza season may be.

Even with these confirmed cases, reports of flu-like symptoms at doctor's offices and at hospitals are at average to low levels when compared to this same time of year during other flu seasons in Michigan.

Read the full report from the MDCH.

Learn where to get a flu shot.

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