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Washtenaw County Flu Activity

March 20, 2018:

  • Influenza continues to circulate in Washtenaw County at moderate levels;  we peaked in early February.  Lab-confirmed flu reports have decreased over the past month and school illness reports have started to fall as well.  Influenza A/H3N2 remains the dominant virus, but influenza B virus reports are becoming more frequent.
  • Flu-related hospitalizations are decreasing but remain elevated.  Unfortunately, flu-related deaths in older Washtenaw residents have occurred.
  • It's not too late to get vaccinated!  It's likely that the flu season will continue at least through the end of March. Everyone 6 months and older needs a flu vaccine this year.

Influenza-Associated Hospitalizations and Deaths
in Washtenaw Residents: 2017-18*


week ending

adult deaths

Total child deaths
(0 - 17 years)





*Flu Season starting Oct 1, 2017

Influenza Activity for Current Season

You can hover over the below graphs to see individual data points.

These data are preliminary and will be updated as more information is received.

*Respiratory illness: "Student with fever or pneumonia AND any of these symptoms: sore throat, cough, muscle aches." Numbers are based on parent reports of their child's illness.

Influenza Activity for Past Seasons

2016 - 17 Season

2015 - 16 Season

2014 - 15 Season

2013 - 2014 Season

2012 - 2013 Season

2011 - 2012 Season

Seasons Prior to 2011


Washtenaw County Health Department Influenza Information web page

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