Arusha, Tanzania — Tanzania’s president said Monday that one sample from a remote part of northern Tanzania tested positive for Marburg disease, a highly infectious virus which can be fatal in up to 88% of cases without treatment.

Tanzania’s president said Monday that one sample from a remote part of northern Tanzania tested positive for Marburg disease, a highly infectious virus which can be fatal in up to 88% of cases without treatment.

Tanzania's president has announced an outbreak of Marburg virus, an Ebola-like virus, just a week after her health minister denied that there were any cases in the country. President Samia Suluhu Hassan said at a press conference on Monday that health authorities had confirmed one case of Marburg in the north-western region of Kagera.