COLUMBUS (WCMH)–Columbus Public Health said Friday that the number of Crypto cases in Columbus, Franklin County, and Delaware is up to 511.

That’s up from 423 earlier this week.

Crypto can cause diarrhea, dehydration, and nausea. It’s spread through infected water or through contact with someone who has it.

If you suspect you or your child has Crypto, health officials say you should stay out of the pool this weekend.