Health officials are increasingly concerned about an Ebola outbreak in the Democratic Republic of Congo (DRC) that has resulted in over 136 deaths and nearly 600 suspected cases. The outbreak involves the Bundibugyo strain of Ebola, which has a mortality rate ranging from 25% to 50% and lacks approved vaccines or treatments. World Health Organization Director-General Tedros Adhanom Ghebreyesus expressed deep concern about the epidemic's rapid spread, noting that the virus had been circulating undetected for weeks due to misdiagnosis. The CDC has raised its travel advisory for the DRC to level 3, advising Americans to reconsider nonessential travel and increasing screening for travelers from affected areas. An American doctor working in the DRC has tested positive for the virus, prompting the evacuation of six other American workers. The WHO has classified the outbreak as a 'public health emergency of international concern,' although it does not qualify as a pandemic. Countries sharing borders with the DRC, such as Uganda and Rwanda, are at heightened risk of further spread, as Ebola transmits through contact with infected individuals or contaminated materials. Symptoms include fever, muscle pain, and unexplained bleeding.