St. Louis (KSDK) - A local school district may have to shut down a couple of days next week due to so many students coming down with Influenza B.

More than 20 kids were sent home from the North St. Francois County R-1 School District in just period alone this week.

So what is Influenza B, and how can you keep your family healthy?

Vicki Moran is a registered nurse and instructor at the Saint Louis University School of Nursing. She stopped by First @ 4 to talk about how to stay healthy.

Click the video player above to hear what she had to say.