Acute diarrhea, especially in children in developing countries
Outbreaks of diarrhea secondary to contaminated water or food
Prolonged diarrhea in immunocompromised persons
Diagnosis mostly by identifying organisms in specially stained stool specimens
Causes of coccidiosis
Sarcocystis infects many species
Humans are intermediate hosts (infected by ingestion of fecal sporocysts) for some species
Humans are definitive hosts for Sarcocystis bovihominis and Sarcocystis suihominis (infected by ingestion of tissue cysts in undercooked beef and pork, respectively)
Occurs worldwide, particularly in tropics and in regions where hygiene is poor
Clustering of cases occurs in households, day care centers, and among sexual partners
Infections caused by I belli, C cayetanensis, and Cryptosporidium species
Viral gastroenteritis, eg, rotavirus
Other traveler's diarrhea, eg, Escherichia coli
Other causes of diarrhea in AIDS, eg, cytomegalovirus colitis
Immunocompromised patients should boil or filter drinking water and should consider avoidance of lakes and swimming pools
Routine precautions (handwashing, gloves, disinfection) should prevent institutional patient-to-patient spread
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