Taenia solium, the Most Important Foodborne Zoonotic Parasite: Is Elimination Possible? An Example from Zambia
Sarah GabriŽl, Tine De Coster, for the CYSTISTOP Group
Ghent University, Department of Veterinary Public Health and Food Safety, Belgium
Taenia solium, the number one foodborne parasite (FAO/WHO), has been extensively studied in Zambia in people and pigs, and found to be highly prevalent. Human act as final hosts, with the adult tapeworm lodging in the intestines (taeniosis) and excreting eggs into the environment via the stool. Pigs, the intermediate hosts, obtain the infection via ingestion of infected stool/feed/water contaminated with parasite eggs which develop into cysticerci (porcine cysticercosis), primarily in the muscles. People acquire the tapeworm via consumption of insufficiently cooked infected pork. However, human can also act as accidental intermediate host when ingesting food/water contaminated with eggs, and develop cysticercosis. The cysticerci have a tendency to lodge in the central nervous system and cause neurocysticercosis. With 57% of people with active epilepsy diagnosed with probable or definitive neurocysticercosis in Zambia, suggesting T. solium to be the single most important cause of epilepsy, control is urgently needed. We have assessed the impact of different control interventions on occurrence of T. solium in people and pigs in the Zambian setting.
Keywords: Cysticercosis/taeniosis, elimination, One Health, Taenia solium, Zambia
Contact Address: Sarah Gabriël, Ghent University, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine Salisburylaan 133, 9820 Merelbeke, Belgium, e-mail: sarah.gabrielugent.be