The deadly Marburg virus is believed to originate in fruit bats and spreads between people through close contact.

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.

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.