According to virologists, the virus is probably more widespread than we think it is. Improving diagnosis can help detect it more quickly and efficiently.

Health officials in Rwanda are dealing with the country’s first outbreak of the Marburg virus, an Ebola-like disease which, if left untreated, has a fatality rate of up to 88%.

Marburg is one scary disease. The fatality rate can be as high as 88%. There's no approved vaccine — yet. With one of the world's largest outbreaks, Rwanda is now testing a promising new vaccine.

Tanzania's president said a sample tested positive for the Marburg virus, which has a fatality rate of up to 88 percent if untreated.

The Marburg virus, which causes bleeding from the eyes, nose, and mouth, can be fatal in up to 90% of those infected.

Marburg, which is similar to the deadly Ebola virus, has fatality rates between 24 percent to 88 percent.

Health officials in Rwanda are dealing with the country’s first outbreak of the Marburg virus, an Ebola-like disease which, if left untreated, has a fatality rate of up to 88%.

Rwanda has confirmed six deaths and 20 cases of Marburg disease since the beginning of the epidemic, the country's health minister Sabin Nsanzimana said late on Saturday.

Health officials in Rwanda are dealing with the country’s first outbreak of the Marburg virus, an Ebola-like disease which, if left untreated, has a fatality rate of up to 88%.

Health officials in Rwanda are dealing with the country’s first outbreak of the Marburg virus, an Ebola-like disease which, if left untreated, has a fatality rate of up to 88%.