much higher

Entamoeba histolytica

400 but may be much higher

Cryptosporidium spp.


Data from Crompton, DWT (1999) How much human helminthiasis is there in the world? Journal of Parasitology 85: 397-403; Olsen BE, Olson ME, and Wallis PM (2002) Giardia: The Cosmopolitan Parasite. Wallingford, UK: CABI; Haque R et al. (2003) Current concepts: amebiasis. New England Journal of Medicine 348: 1565-1573.

nutrient loss, particularly of iron and protein, it is believed that such low-level but long-term infections contribute to the persistently poor nutritional state of many, especially children, in the developing world.

The most important parasites of man are from two main groups: the helminth worms and protozoans. Although several hundred different species have been described, the vast majority of infections are caused by relatively few.

Food Allergies

Food Allergies

Peanuts can leave you breathless. Cat dander can lead to itchy eyes, a stuffy nose, coughing and sneezing. And most of us have suffered through those seasonal allergies with horrible pollen counts. Learn more...

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