From the Centers for Disease Control and Prevention. Prevalence of parasites in fecal material from chlorinated swimming pools--United States, 1999.
D000818:Animals; D002713:Chlorine; D016785:Cryptosporidium parvum / Q000302:isolation & purification*; D004203:Disinfection; D005243:Feces / Q000469:parasitology*; D016829:Giardia lamblia / Q000302:isolation & purification*; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000635:transmission*; D015995:Prevalence; D013551:Swimming Pools; D014481:United States
D002713:Chlorine