Rebuilding Urban Ecosystems for Better Community Health in Kathmandu
In 1991, the National Zoonoses and Food Hygiene Research Centre (NZFHRC) in Nepal and the University of Guelph, Canada, began to work together to understand and control the transmission of a tapeworm infection called echinococcosis or hydatidosis in Wards 19 and 20 of Kathmandu. Ecchinococcocus species are small tapeworms that depend on 2 animal hosts to complete their reproductive lifecycle. The mature tapeworm lives in the intestine of a dog or other canine. The worm eggs are shed in dog faeces, contaminating the environment. A herbivorous animal may ingest the eggs while grazing, thus becoming an intermediate host for the immature stage of the worm. This immature tapeworm forms large thick-walled cysts in the organs of the intermediate host, not usually causing much harm to the animal, depending on the location and number of cysts. When the intermediate host is eaten by a dog or canine, the immature tapeworms take hold in the carnivore’s intestine and develop into mature worms, completing the lifecycle.
KeywordsIntermediate Host Stakeholder Group Hydatid Cyst Cystic Echinococcosis Alveolar Echinococcosis
We are grateful to a large number of researchers and institutions who worked with us over the years. Special thanks are due to our partners from SAGUN, all members from the 18 stakeholder groups from Wards 19 and 20 of Kathmandu, students and other colleagues from the University of Guelph, Canada, and all staff, consultants, advisors, and resource persons who worked directly with NZFHRC. IDRC support was provided through projects 003320, 101277, and 104659.
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