Abstract
Cases of schistosomiasis seen at this hospital have increased in the past five years (fig 1). Many of these patients were travellers whose only fresh water exposure was in Lake Malawi. We therefore reviewed all cases of proven schistosomiasis diagnosed at this hospital between 1991 and 1994. Fig 1 Schistosoma haematobium and S mansoni infection in travellers attending the Hospital for Tropical Diseases, London, 1967-94 We used parasitology records to identify patients with proved schistosomiasis (in whom schistosome ova were identified) attending this hospital between 1 January 1991 and 31 December 1994. Patients with an enzyme linked immunosorbent assay (ELISA) positive for schistosomes in whom ova were not found were excluded. Patients' characteristics, travel history, and laboratory data were recorded; cases …
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