The flu is the only pandemic in recent times to affect our country. But there are others out there and they continue to spread under the radar.

We've overcleaned our kids' environment, two scientists argue - the result is rising rates of asthma and allergies. The solution is tolerating a bit of grubbiness.

Dr. Jennifer Gardy's new book, 'It's Catching', educates young readers about disease detection, the difference between common germs and how some microbes are actually good for us.