The World Health Organization confirmed an outbreak of the virus in Equatorial Guinea and Tanzania earlier this year. Authorities first issued a warning for Equatorial Guinea in February following a series of deaths in early January. The Ministry of Health of Tanzania then announced its own outbreak in late March.
There have been 14 confirmed cases in Equatorial Guinea since the epidemic began, with 10 of those patients dying, according to the CDC An outbreak among a group of fisherman in Tanzania produced eight confirmed cases of the viral fever, five of which were fatal, the CDC said.
The CDC on Thursday warned doctors to watch for possible imported cases and patients exhibiting symptoms that include fever, fatigue, and blood-strained vomit and diarrhea. There have not been any reported cases of Marburg virus thus far in the US and the CDC said the risk of imported cases is relatively low.