Nine cases of the deadly disease have been reported in the Kagera region of Tanzania so far. But officials expect that number to rise.

Tanzania's government said no-one in the country had tested positive for the Marburg virus after the World Health Organization (WHO) said at least eight people in the northwest were believed to have died from it.

With the fatality rate of 8% it is the same virus family as Ebola. The main carrier is from fruit bats which spreads to humans then through the contact of bodily fluids of infected individuals, it spreads to others.