Coccidial infections — photos

Symptoms and syndromes in photos

Main » Infectious diseases » Infections Acquired through the Gastro-intestinal Tract » Coccidial infections

Section of sarcocyst in human muscle.

Photo 1. Section of sarcocyst in human muscle. In the muscles of the intermediate host Sarcocystis forms fusiform cysts containing large numbers of bradyzoites. Although it is rarely diagnosed in life this condition may be common in man who harbours the sarcocysts of a number of different species, none of which have so far been identified. 'Sarcocystis lindemanni' is no longer considered to be a valid species. (x250)

Sarcocystis hominis-like oocysts in intestinal epithelium.

Photo 2. Sarcocystis hominis-like oocysts in intestinal epithelium. This coccidian parasite is common in man and is acquired from the consumption of raw or inadequately cooked beef in which the sarcocyst stage occurs. In this case man is the definitive host. Sporulated oocysts or single sporocysts are passed in the faeces. S. suihominis is acquired from pork. (x325)

Isospora belli oocysts.

Photo 3. Isospora belli oocysts. Isospora belli un- spbrulated oocysts are passed in the faeces. The infection may be associated 518 with diarrhoea, due to development of the parasite in the intestinal epithelium, or symptomless. (x450)

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