Information for Healthcare Providers
Ebola virus disease (EVD) is a severe, often fatal infectious disease affecting humans and non-human primates. The genus Ebolavirus is composed of six species, four of which are known to cause disease in humans (Zaire, Sudan, Tai Forest, Bundibugyo).
Ebola viruses enter the body through mucous membranes, breaks in the skin, or parenterally. The incubation period for EVD is 2 to 21 days (usually 8 to 10 days). Initial signs and symptoms of EVD are nonspecific and can include fever, chills, myalgias, and malaise. Gastrointestinal symptoms, including watery diarrhea, vomiting, and abdominal pain, follow initial symptoms after about 5 days. Other symptoms, such as chest pain, confusion, and unexplained bleeding, may occur.