Posted Saturday, February 22, 2014 --- 10:05 p.m.
It's a virus that spreads quickly, and it's symptoms aren't pleasant to say the least.
Dr. Robert Leschke with Madison Emergency Physicians says fever, sore throat, cough and body aches are among the most common symptoms.
"This season we're seeing an increased number in symptomatic influenza in the younger population," Leschke said.
Normally, it isn't all too dangerous; but a certain type, known as H1N1, can be a whole new deal.
"The H1N1 is a different sub-type that often times will result in more significant respiratory pathology," Leschke explained.
This means that it can attack different respiratory tissues -- and can sometimes, though rare, be fatal.
Most recently, Omaha, NE, police officer Greg Hamill died of complications from the H1N1 form of the Flu.
Leschke says that influenza can hit people hard pretty fast, regardless of it being the H1N1 form or the more common form.
The best way to prevent the flu, according to Leschke, is to wash your hands frequently using antibacterial soap, keeping sick kids at home and staying away from areas where people are generally ill.
Last, but certainly not least, "getting your flu shot is your best line of defense to getting the Flu," according to Leschke.