Marburg Virus Outbreaks Two simultaneous Marburg virus outbreaks Marburg virus is currently experiencing two simultaneous outbreaks, one in Tanzania and the other in Equatorial Guinea, a situation that has not been seen before. Marburg is a filovirus related to Ebola , but it has been rare until now. The US Center for Disease Control (CDC) issued a health alert on the potential for imported cases to the US, but the risk is still low. Concerns over the official number of Marburg virus cases in Equatorial Guinea The situation in Equatorial Guinea is particularly worrying, with suspected deaths from Marburg being discovered in two villages in the north of the country, and 15 confirmed cases reported. However, there are concerns that the actual number of cases may be higher than the official tally, and the virus may be spreading undetected in the country. Marburg virus more deadly than Ebola Marburg virus is m