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Finding of an unusual ova - Schistosoma mansoni

Schistosomiasis is a major public health problem, with an estimated 200 million people infected, mostly in Africa.[1] It is endemic in 52 countries in Africa, South America, Caribbean Islands and Eastern Mediterranean. No case of S. mansoni has been reported so far from India.[2] S. mansoni is also known as Manson’s blood fluke, which causes intestinal schistosomiasis or bilharziasis in humans producing lesions in the intestinal tract. Humans are the definitive host. On coming in close contact with stagnant water, they get infected by the cercaria (infective form in humans) piercing the intact skin causing swimmer’s itch. Freshwater snails of genus Biomphalaria are the intermediate hosts. Eggs are the infective stage for snails. The infection is common in older children and adults; the prevalence is higher and intense among males when compared to females. This could be due to the outdoor activity seen more in young male adults. The clinical features may be highly variable depending upon the severity of the infection.[3] Here we are reporting a case of gastrointestinal schistosomiasis presenting with diarrhea in a foreigner studying in India [Figure 2].