Hello doctor, I wonder if chlorine levels in a normal swimming pool kill all the microbes. If someone with a fungal infection swims in a pool, won't it spread to others through the water?
Hello. I understand your concern. Swimming is considered as a safe recreational activity. But that is not totally true. Chlorination of water is known to kill most of the microorganisms (which include bacteria, viruses, fungi and parasites). But there are several factors to be considered like:  1) Type of microorganism (some organisms may be resistant to chlorination). 2) Adequate chlorination (if sufficient chlorine is not added, there could be a chance of acquiring infection).  3) Duration of chlorination (when a microorganism is introduced into the water, the chlorine may not kill the organism right away, some resistant organisms may survive longer in the water). 4) Microbial load (the stage of infection of the infected person is also important, during the acute acute/highly infective stage, chances of spreading infection may be higher). Consult a general practitioner online for further follow up --->