The CDC has issued a Level 3 travel advisory for Rwanda due to an outbreak of the Marburg virus. The agency will also screen travelers from Rwanda.

The Marburg virus can cause a severe hemorrhagic fever that is similar to Ebola. And like Ebola, it can be deadly. This outbreak has included people in seven districts in Rwanda and by Tuesday, the number had risen to 36 people in isolation and treatment, many of them reportedly health care workers. Twelve people have died.

Rwanda’s health minister says authorities are tracing every potential contact of the index case in the country’s outbreak of Marburg virus disease to reduce the risk of wider spread