Rwanda has reported nine deaths from its first-ever Marburg virus outbreak and confirmed 18 patients are in isolation, according to its health ministry.

Rwanda says eight people have died so far from the Ebola-like and highly contagious Marburg virus, just days after the country declared an outbreak of the deadly hemorrhagic fever that has no authorized vaccine or treatment.

A rare, highly contagious Ebola-like virus has claimed eight lives in Rwanda, and U.S. health officials are closely monitoring the outbreak. Marburg virus causes a rare hemorrhagic fever that has no authorized vaccine or treatment.