exhaustion and high fever. she's been put in a coma to stabilize her and the wild low springs water park has closed down. >> it's hard for us to even think about the possibility of a child getting sick out here. >> reporter: her family is asking for prayers. on their facebook page, they write, she still has a long fight ahead. now, as i said, this is incredibly unusual. but in order to prevent it because this is obviously quite scary, one thing that you can do is when you're swimming in a very warm lake or stream or hot springs, hold your nose when you go under water particularly when you jump or dive into the water. hold your nose or use a nose clip. >> all right, elizabeth, thank you very much. we feel for this little girl and her family. luckily this is something that there is very little chance of ever happening. >> but still, if it happens to your child -- coming up next, another mysterious illness, this time 350 people infected by a stomach virus in 15 states.