 Story highlights 30-year-old male health worker in Uganda dies of Marburg 
 
 Marburg is an Ebola-like hemorrhagic fever 
 
 99 put into isolation 
 
 At least 11 test negative 
 
 Three days after a fatal case of Marburg hemorrhagic fever was diagnosed in Uganda, 99 people have been quarantined in four different locations across the East African country, as field epidemiologists and surveillance officers continue to closely monitor all people who got into contact with only victim. Other cases have recurred since, however. Hide Caption 13 of 45 45 photos: The Ebola epidemic Health workers bury a body on the outskirts of Monrovia on October 20, 2014. Hide Caption 21 of 45 45 photos: The Ebola epidemic A person peeks out from the Dallas apartment where Thomas Eric Duncan, the first person diagnosed with the Ebola virus in the United States, was staying on October 3, 2014. The boy was one of the patients that was pulled out of a holding center for suspected Ebola patients after the facility was overrun and closed by a mob on August 16. 1967 Germany and Yugoslavia Uganda 31 7 (23%) Simultaneous outbreaks occurred in laboratory workers handling African green monkeys imported from Uganda 1 In addition to the 31 reported cases, an additional primary case was retrospectively serologically diagnosed. The death rate runs as high as 80 percent, although it was significantly lower in the initial outbreak when patients were cared for in relatively modern, European hospitals. 11 12 
 
 2012 Uganda Kabale 15 4 (27%) Testing at CDC/UVRI identified a Marburg virus disease outbreak in the districts of Kabale, Ibanda, Mbarara, and Kampala over a 3 week time period. The extensive contact tracing included tracking an embalmer back to Kenya, where he was tested and found not to be infected with Marburg. Tekmira makes TKM-Ebola, one of a handful of experimental Ebola treatments used on Americans who caught Ebola in West Africa.
– At least 99 people have been quarantined in four different locations in Uganda so far after State House Uganda confirmed a man died this week of the Marburg virus—a type of hemorrhagic fever that's strikingly similar to Ebola, CNN reports. Many of the individuals now in isolation are health workers, as the deceased was a radiographer in a Kampala hospital and another health center and had contact with multiple colleagues. So far 11 of the quarantined have tested negative for Marburg, though they may be retested in a few days if the symptoms they've developed don't disappear. And those symptoms might sound familiar if you've been following the Ebola situation: Both viruses are members of the Filovirus family and manifest in similar ways, including fever, severe headache, and major bleeding, the Washington Post reports. Although many of the outbreaks recorded since Marburg was IDed in 1967 have been single cases, the fatality rate ranges from 23% to 90% (if you discount those single-case years), the CDC notes. Perhaps to mitigate increasing concern over Ebola after Thomas Duncan's death in Texas this week, CDC Director Thomas Frieden has been talking up efforts the CDC has undertaken in Uganda and emphasized that no further Marburg cases have been documented. "That may not make headlines, but it does give us confidence that we can control Ebola in West Africa," he says, per CNN. Dr. Ruhakana Rugunda, Uganda's prime minister, seems to share Frieden's optimism, posting a series of tweets this week that indicate the country's success rate and experience in dealing with hemorrhagic fevers.