Epidemiological Study Of Trichinosis In Kaduna State Of Nigeria

Tongue and diaphragm samples were collected from a total of 620 pigs slaughtered at different locations in Kaduna State of Nigeria, and 240 randomly trapped brown field rats (Arvicanthus niloticus). between August, 1987 and Nay, 1989. All samples were separately subjected to the artificial enzymatic digestion technique (using 1% acid pepsin). In addition, carcasses were grossly examined for the presence of cystic lesions. Records of striated muscle biopsies done between 1975 and 1987 at Ahmadu Bello University Teaching Hospital (ABUTH) Zaria, were also reviewed for cases of Trichinella spiral is infection. L- spiral is larvae were recorded in three (0.57.) of the 620 pigs sampled. In all positive cases, larvae were recovered only from the diaphragm and none from the tongue. Less than one larva per gram of musculature was recovered. Gross examination of swine carcasses revealed Cysticercus eellulosae cysts in 13(2.1"/.) of the pigs. Such cysts were distributed in various parts of the body including the tongue (23.17.), thigh muscle (23.17.), masticatory muscle (23.17.), diaphragm (15.47.) and heart (15.47.).a All the tissues of the brown, field rats examined were negative for T. spiralis larvae. Also records of the human muscle biopsies reviewed did net reveal any case of trichinosis being diagnosed. However, the potential for human infections does exist.

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