Porcine cysticercosis in western Kenya
One of the largest constraints to profitable swine production in rural, resource-poor communities of Eastern and Southern Africa is the emergence of porcine cysticercosis caused by the zoonotic porcine tapeworm, Taenia solium. Cysticercosis in pigs has grave economic impacts through the condemnation of affected meat, and is also a growing detriment to public health and human productivity. Factors contributing to an increased prevalence of porcine cysticercosis in developing areas include poor sanitation and hygiene, free-ranging pig management, and an overall lack of meat inspection. An epidemiological study was recently undertaken to better characterize the prevalence and risk factors of cysticercosis among free range pigs of Teso District, in western Kenya. Three hundred sixteen small pig farmers were randomly selected and their pigs were examined by a veterinarian for evidence of cysticercosis; prevalence among study households was determined to be approximately 10%. Information on pig husbandry practices was collected from each of the participants via a structured questionnaire. Absence of a human latrine was significantly associated with porcine cysticercosis. Other risk factors surveyed included pig housing and nutrition, local prevalence of T. solium in humans, and knowledge of the disease. Control measures such as improvements in sanitation and hygiene, treatment and vaccination of pigs, and meat inspection should be implemented where possible in collaboration with local populations.