That’s especially a problem for children. At the Centers for Disease Control and Prevention, Michele Hlavsa:
“Studies show that young children tend to drink more water while swimming than adults. Because they drink more water, they’re more likely to get sick.”
Hlavsa advises parents to help protect kids by encouraging them to keep water out of their mouths. They can help to protect other kids by giving their kids a pre-swim wash, not letting them swim with diarrhea, and taking them on bathroom breaks every 60 minutes or checking diapers every 30 to 60 minutes.