(Parenting) -- Getting the norovirus yourself is awful. Having your kid come down with it? Even worse.
Each year, norovirus leads to about 21 million illnesses, 70,000 hospitalizations and 800 deaths, according to the Centers for Disease Control and Prevention.
The particularly nasty strain of stomach virus that's spreading like wildfire this year, called GII.4 Sydney, can cause violent vomiting, diarrhea and stomach cramps, not to mention "it's messy and stinky and not fun to clean up," says pediatrician and CNN's living well expert Dr. Jennifer Shu.
Here's what to do if your child comes down with the highly contagious bug, which typically lasts two to three days: