Ebola Virus Disease Transmission November 5, 2014
Ebola Virus Disease Transmission November 5, 2014 Key Points: The Ebola virus is transmitted from person to person through close personal contact with an infected individual or their blood or body fluids. Airborne transmission of Ebola virus has not been demonstrated in human studies. Individuals infected with Ebola are not infectious before the onset of symptoms. Individuals at the height of their illness or in the latter stages of fatal disease present the greatest risk for potential transmission. Strict adherence to infection prevention and control precautions, including the use of personal protective equipment, has been shown to be extremely effective in preventing Ebola virus transmission to health care workers. How is Ebola transmitted? The Ebola virus is considered a classic zoonotic pathogen with the suspected reservoir being the African fruit bat, with chimpanzees, apes, and humans being end hosts. Transmission to humans from contact with infected animals through the preparation of “bush meat” has been well documented in Africa1. Person to person transmission of the Ebola virus occurs through close personal contact with an infected individual or their blood or body fluids2. Transmission occurs from direct blood or body fluid exposure to non-intact skin or mucous membranes, or through percutaneous exposure (e.g. needle stick injury). In addition to blood, Ebola virus has been detected in other body fluids following symptom onset, including saliva, stool, semen, breast milk, urine, sweat, and tears3,4, and the World Health Organization has indicated that vomit can also be infectious5. Any body fluid from an infected patient that has blood mixed with it may potentially contain the virus.
[Show full text]