Think you know everything about cold and flu? Take this quiz to find out.

You might love the cool fall weather because it means the end of sweaty heat and the beginning of cozy sweater season. 

But germs also love this time of year, thanks to cool, dry conditions. 

Dry air also leaves your respiratory tract more vulnerable to invading pathogens like flu and cold viruses. 

What else is circulating in the air at this time of year? A lot of misinformation. 

Let’s see how much you really know about cold and flu. 

Test your knowledge and find out if you’re a flu fighter or need to brush up on your viral know-how.