Health authorities are urging people with diarrhoea to avoid swimming pools as cryptosporidiosis infections surge across New South Wales and Queensland.
The cryptosporidium parasite, which causes acute diarrhoea and can survive in chlorinated water for many days, has been responsible for 498 cases of diarrhoea in NSW this year – a five-fold increase on the five-year average of 95 for the same period.