With peak flu season, it's not too late to get your flu shot
Feb 9, 2016 9:04 PM - The McHenry County Department of Health reminds county residents that it is not too late to get a flu shot. Flu season normally peaks between December and February. Cases often occur through May according to the Centers for Disease Control. Although the prevalence of people in McHenry County testing positive for flu is still below last year's level, there has been a slight increase in those visiting local emergency departments with influenza-like illness.