The US Centers for Disease Control and Prevention (CDC) has been warning people with diarrhoea against swimming this summer, stressing that it is the most common illness spread through recreational water. The US health agency posted a similar warning on Twitter along with a cartoon gif in which a kid can be seen going down a slide while leaving a brown streak behind.
“Don’t leave your mark at the pool this summer!” reads the gif text. “It only takes one person with diarrhoea to contaminate the entire pool.”