Swimmers are encouraged to take precautions against a chlorine-resistant parasite that is known to swimmers.
The occurrence of chlorine-resistant parasites appears to increase, according to a new report from the Centers for Disease Control and Prevention.
There were more than 13,000 reported cases of cryptosporidiosis, a watery diarrhea that may be up to three weeks in some patients, in Canada between 2010 and 2016.
Cryptosporidiosis is caused by the cryptosporidium parasite, which lives in the intestines of infected humans and animals. It generally only makes the infected person ill, but can be life-threatening to people who are difficult with the immune system.
The parasite can survive in chlorinated water for up to a week.
So, swimmers in B.C. be worried about "crypto?"
The CDC says there were 88 cases in the 2017 province, the latest information available.
Health officials say the best way to avoid getting sick is to avoid public pools, especially if they are already sick.
Those who still decide to dip should shower before and after swimming and make sure they wash their hands before eating.
With files from CTV News Vancouver Island