Tanzania's government said no-one in the country had tested positive for the Marburg virus after the World Health Organisation (WHO) said at least eight people in the northwest were believed to have died from it.
"As of 15th January 2025, laboratory results for all suspected individuals were negative for Marburg virus," Jenista Mhagama, the country's health minister said in a statement released late on Wednesday.
Victims had presented with typical Marburg symptoms, including headache, high fever, back pain, diarrhoea, vomiting blood, muscle weakness and external bleeding.
The viral hemorrhagic fever has a fatality rate as high as 88 percent, and is from the same virus family as the one responsible for Ebola, which is transmitted to people from fruit bats endemic to parts of East Africa.
After receiving information on the suspected cases, Mhagama said the ministry took immediate measures, including the deployment of a team of experts to the area, event investigation, the collection of specimens and laboratory testing.