Tanzania has asked medical experts to investigate a mysterious “communicable” disease that has already killed five people in the country, authorities said.

The disease has been detected in “seven people with symptoms such as fever, vomiting, bleeding and kidney failure,” the health ministry said in a statement late Thursday night.Medical experts have been dispatched to the Kagera region (northwest) bordering Uganda to investigate the “communicable” disease, said health official Tumaini Nagu.

“Samples have been taken from patients and the dead to identify the source and type of disease,” she said in a statement, calling on the population to remain calm.

The case comes after an Ebola outbreak in Uganda that lasted almost four months and left 55 people dead. Uganda declared the end of the outbreak in January.Last year, Tanzania identified an outbreak of leptospirosis, or “rat disease,” that killed three people in the southeastern region of Lindi.