This organism is excreted in feces as sporulated oocysts and…
This organism is excreted in feces as sporulated oocysts and is the primary cause of recreational waterborne disease outbreaks due to its protective outer shell, which is tolerant to chlorine disinfection. On wet mounts and trichrome stains, it may be confused with yeast due to its small size so confirmation should be accomplished using a confirmatory method, such as modified Acid-Fast staining or direct fluorescent antibody microscopy.