Confirmed Flu Cases (PDF): Confirmed flu cases are taken from reports submitted by laboratories, urgent care centers, and physician offices. These cases have undergone testing which confirmed the presence of a flu virus.
Flu-Like Illness Absence Reports (PDF): Flu-like Illness numbers are taken from weekly reports of absenteeism submitted by schools and childcare centers in Muskegon County at the end of each week. These reports are based on symptoms provided by parents who are calling-in to report their child absent due to illness. Flu-like illness symptoms include fever (usually high), headache, extreme tiredness, dry cough, sore throat, runny or stuffy nose and muscle aches. These are not laboratory confirmed cases.