By Editor
Ebola disease is a serious and potentially life-threatening infectious disease caused by viruses in the genus Orthoebolavirus, formerly known as Ebolavirus. The disease was first identified in 1976 in what is known as the Democratic Republic of the Congo and is found primarily in sub-Saharan Africa. Ebola can cause severe illness and death, particularly when patients do not receive prompt medical care.
Ebola spreads mainly through direct contact with the blood or other body fluids of an infected person who is showing symptoms, or someone who has died from the disease. It can also spread through contaminated objects, such as needles, bedding, and clothing. In some cases, people may become infected through contact with infected animals. Unlike respiratory infections such as influenza and COVID-19, Ebola does not spread through the air simply because someone is nearby.
The symptoms of Ebola usually begin between 2 and 21 days after exposure, with an average incubation period of approximately 8–10 days. Early symptoms include fever, headache, muscle pain, weakness, and fatigue. As the disease progresses, patients may develop vomiting, diarrhea, abdominal pain, and, in severe cases, unexplained bleeding and organ failure.
There are several types of orthoebolaviruses, including Ebola virus, Sudan virus, Taï Forest virus, and Bundibugyo virus, which are known to cause disease in humans. The severity of the disease varies, and reported case-fatality rates have ranged widely, reaching approximately 90% in some outbreaks. However, early diagnosis, appropriate supportive care, and specific treatments for certain Ebola virus infections can significantly improve survival.
Preventing Ebola requires good hygiene, avoiding contact with infected people’s body fluids, using appropriate protective equipment, safe burial practices, and rapid identification of suspected cases. A vaccine is available for protection against Ebola disease caused by the Ebola virus species, but it does not protect against every orthoebolavirus species.
Although Ebola remains a major public health concern, understanding how it spreads, recognising its symptoms, and seeking prompt medical attention can help reduce transmission and save lives.
Here are 25 Things You Should Know About Ebola
- Ebola is caused by a virus. It is caused by viruses belonging to the genus Orthoebolavirus.
- Ebola was first identified in 1976. The first recognized outbreaks occurred in what are now the Democratic Republic of the Congo and South Sudan.
- Ebola occurs primarily in sub-Saharan Africa. Most recognized outbreaks have occurred in African countries.
- Ebola can be deadly. Case-fatality rates have varied between outbreaks, sometimes reaching 80–90% or higher, depending on the outbreak and circumstances.
- Ebola does not spread simply by being near someone. Standing beside, walking past, or sharing public space with an infected person does not ordinarily transmit the disease.
- Ebola is not spread through the air like flu or COVID-19. Transmission primarily occurs through direct contact with infectious body fluids or contaminated materials.
- Ebola spreads through infected body fluids. These include blood, vomit, feces, urine, saliva, sweat, breast milk, semen, and vaginal fluids.
- People become contagious when symptoms begin. A person infected with Ebola is not considered contagious before developing symptoms.
- The incubation period can last 2–21 days. Symptoms most often begin around 8–10 days after exposure.
- Fever is a common early symptom. Other early symptoms include headache, muscle aches, weakness, and fatigue.
- Ebola can cause severe digestive symptoms. Vomiting, diarrhea, and abdominal pain may occur as the illness progresses.
- Bleeding may occur in severe cases. Some patients develop unexplained bleeding, although bleeding does not occur in every case.
- Ebola can lead to organ failure. Severe illness can damage multiple organs and cause shock.
- Healthcare workers may face a high risk of infection. The risk increases when they care for infected patients without appropriate protective equipment and infection-control procedures.
- Family caregivers can also be exposed. Direct contact with an infected person’s body fluids without proper precautions can transmit the virus.
- Contaminated objects can spread Ebola. Needles, clothing, bedding, and medical equipment contaminated with infectious body fluids can transmit the virus.
- Safe burial practices are essential. The body of someone who has died from Ebola can remain infectious, making safe handling and burial procedures crucial.
- Animals can be a source of infection. Contact with infected wildlife, including certain bats and non-human primates, may expose people to Ebola viruses.
- Ebola is diagnosed through laboratory testing. Polymerase chain reaction (PCR) testing of blood is commonly used to detect the virus in living patients.
- Suspected cases require immediate medical assessment. Patients should be separated from others in healthcare settings while appropriate testing and infection-control measures are arranged.
- Early supportive care improves survival. Fluids, electrolyte replacement, and treatment of complications can help patients recover.
- Specific treatments are available for certain Ebola infections. Inmazeb and Ebanga are approved in the United States for treating disease caused by Ebola virus (Orthoebolavirus zairense), not all orthoebolaviruses.
- A vaccine is available for one type of Ebola disease. The ERVEBO vaccine protects against disease caused by Ebola virus, but it is not a universal vaccine for all orthoebolaviruses.
- Survivors may experience lasting health problems. Some people develop complications such as joint pain, eye problems, fatigue, or other persistent symptoms.
- Early reporting and prevention can save lives. Avoiding contact with potentially infectious body fluids, following public health guidance, and promptly reporting suspected cases help prevent outbreaks from spreading.
Ebola is a serious infectious disease, but it can be controlled through early detection, effective infection prevention, safe caregiving practices, vaccination against the Ebola virus where appropriate, and timely medical treatment. The most important fact to remember is that Ebola is not spread simply by being near an infected person; transmission mainly occurs through direct contact with infectious body fluids or contaminated materials. Understanding this fact helps reduce unnecessary fear while encouraging responsible prevention and public health action.
