Tanzanian pastoralists urge research into deadly livestock disease as government launches vaccination drive
What you need to know:
- Known locally among the Maasai as Ormilo—meaning “dizziness”—the disease is caused by the Taenia multiceps tapeworm. The parasite’s larvae migrate to the brain, forming cysts that trigger severe neurological symptoms and ultimately lead to death. There is currently no known cure or vaccine for the disease.
Arusha. Pastoralist communities in Ngorongoro District have called on the government to prioritise research into Coenurosis, a parasitic disease that continues to kill large numbers of goats and sheep across the region.
Known locally among the Maasai as Ormilo—meaning “dizziness”—the disease is caused by the Taenia multiceps tapeworm. The parasite’s larvae migrate to the brain, forming cysts that trigger severe neurological symptoms and ultimately lead to death. There is currently no known cure or vaccine for the disease.
Speaking during the launch of a national livestock vaccination and identification campaign in Ngorongoro, pastoralists urged the government and veterinary research institutions to intensify efforts to develop treatment.
“Every year, we lose more than 40 goats and sheep to Coenurosis,” said Ngorongoro MP Emmanuel Shangai. “Outbreaks are worst during the rainy season between February and March. Ironically, this is when pasture is abundant. We urge the government to act now and save our livestock.”
Pastoralist Altapwai Mayanga echoed the concern and thanked the government for launching the campaign. However, he recommended that the exercise begin earlier in the year to pre-empt seasonal outbreaks.
Director of Veterinary Services Dr Benezeth Lutege explained that Coenurosis kills infected animals within 7 to 14 days. The parasite spreads when dogs, the primary host, excrete eggs onto pasture consumed by livestock.
He advised livestock keepers to prioritise deworming as a preventive measure and said the disease has now spread to several districts in Arusha and Manyara regions.
Minister for Livestock and Fisheries Dr Ashantu Kijaji said the five-year Sh216 billion national vaccination and livestock identification programme (2025–2029) aims to improve animal health, raise the value of livestock, and boost national economic growth.
Arusha RC Kenani Kihongosi urged full pastoralist participation to curb disease outbreaks and support regional stability.
