Ebola virus disease (EVD), previously identified as Ebola hemorrhagic fever (EHF), is a severe, deadly infection, with a case casualty rate of up to 90%. The EVD is characterized by amazing outbreaks of severe, hemorrhagic fever. The EVD was first associated with the occurrence of 318 cases and a case-casualty rate of 90% in Zaire and caused 150 deaths between 250 cases in Sudan. Minor outbreaks continue to emerge occasionally, particularly in Central, East, and southern Africa. There are five identified Ebola virus species of which four have affected humans. There are currently no licensed vaccine or specific available for use in people or animals.
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The U.S is also working tirelessly to assist the four affected countries to advance their exit-screening practices to help guard the rest of the world, including the United States. Thousands of travelers from affected countries visit the United States, and even more people tour Europe and other parts of Asia and Africa. As long as EVD is dispersing in these areas, health experts need to be vigilant to the likelihood of EVD, take a tour history, and quickly isolate and test ailing travelers who have come back from these areas in the past 21 days and have symptoms similar with EVD.
Bowen, E. T. W, Lloyd, G, Harris, W. J, Platt, G. S, Baskerville, A, Vella, E. E. (1977). “Viral haemorrhagic fever in southern Sudan and northern Zaire. Preliminary studies on the aetiological agent”. Lancet 309 (8011): 571–3.
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