Ebolavirus in the context of Sudan ebolavirus

Orthoebolavirus zairense or Zaire ebolavirus, more commonly known as Ebola virus (/iˈboʊlə, ɪ-/; EBOV), is one of six known species within the genus Ebolavirus. Four of the six known ebolaviruses, including EBOV, cause a severe and often fatal hemorrhagic fever in humans and other mammals, known as Ebola virus disease (EVD). Ebola virus has caused the majority of human deaths from EVD, and was the cause of the 2013–2016 epidemic in western Africa, which resulted in at least 28,646 suspected cases and 11,323 confirmed deaths.

Ebola virus and its genus were both originally named for Zaire (now the Democratic Republic of the Congo), the country where it was first described, and was at first suspected to be a new "strain" of the closely related Marburg virus. The virus was renamed "Ebola virus" in 2010 to avoid confusion. Ebola virus is the single member of the species Zaire ebolavirus, which is assigned to the genus Ebolavirus, family Filoviridae, order Mononegavirales. The members of the species are called Zaire ebolaviruses. The natural reservoir of Ebola virus is believed to be bats, particularly fruit bats, and it is primarily transmitted between humans and from animals to humans through body fluids.

Ebola, also known as Ebola virus disease (EVD) and Ebola hemorrhagic fever (EHF), is a viral hemorrhagic fever in humans and other primates, caused by ebolaviruses. Symptoms typically start anywhere between two days and three weeks after infection. The first symptoms are usually fever, sore throat, muscle pain, and headaches. These are usually followed by vomiting, diarrhoea, rash and decreased liver and kidney function, at which point some people begin to bleed both internally and externally. Ebola has a mortality rate of 25–90% depending on treatment, and averages a mortality rate of approximately 50%. Death is often due to shock from fluid loss, and typically occurs between 6 and 16 days after the first symptoms appear. Early treatment of symptoms increases the survival rate considerably compared to late start. An Ebola vaccine was approved by the US FDA in December 2019.

The virus spreads through direct contact with body fluids, such as blood from infected humans or other animals, or from contact with items that have recently been contaminated with infected body fluids. There have been no documented cases, either in nature or under laboratory conditions, of spread through the air between humans or other primates. After recovering from Ebola, semen or breast milk may continue to carry the virus for anywhere between several weeks to several months. Fruit bats are believed to be the natural host of the virus; they are able to spread the virus without being affected by it. The symptoms of Ebola may resemble those of several other diseases, including malaria, cholera, typhoid fever, meningitis and other viral hemorrhagic fevers. Diagnosis is confirmed by testing blood samples for the presence of viral RNA, viral antibodies or the virus itself.

Outbreak is a 1995 American medical disaster film directed by Wolfgang Petersen and written by Laurence Dworet and Robert Roy Pool. The film stars Dustin Hoffman, Rene Russo and Morgan Freeman, and co-stars Donald Sutherland, Cuba Gooding Jr., Kevin Spacey and Patrick Dempsey.

The film focuses on an outbreak of Motaba, a fictional ebolavirus- and orthomyxoviridae-like virus, in Zaire, and later in a small town in California. It is set primarily in the United States Army Medical Research Institute of Infectious Diseases and the Centers for Disease Control and Prevention, as well as the fictional town of Cedar Creek, California. Outbreak's plot speculates how far military and civilian agencies might go to contain the spread of a deadly, contagious disease.

Broad-spectrum antivirals (BSAs) are a class of molecules or compounds, which inhibit the infection of multiple viruses from the same (intra-family BSAs) or different (inter-family BSAs) virus families. BSAs could be divided into experimental and investigational agents, and approved drugs. BSAs work by inhibiting viral proteins (such as polymerases and proteases) or by targeting host cell factors and processes exploited by different viruses during infection. As of 2021, there are 150 known BSAs in varying stages of development, effective against 78 human viruses. BSAs are potential candidates for treatment of emerging and re-emerging viruses, such as ebola, marburg, and SARS-CoV-2. Many BSAs show antiviral activity against other viruses than originally investigated (such as remdesivir and interferon alfa). Efforts in drug repurposing for SARS-CoV-2 is currently underway. A database of BSAs and viruses they inhibit could be found here (https://drugvirus.info/).

This list of Ebola outbreaks records the known occurrences of Ebola virus disease, a highly infectious and acutely lethal viral disease that has afflicted humans and animals primarily in equatorial Africa. The pathogens responsible for the disease are the five ebolaviruses recognized by the International Committee on Taxonomy of Viruses: Ebola virus (EBOV), Sudan virus (SUDV), Reston virus (RESTV), Taï Forest virus (TAFV), and Bundibugyo virus (BDBV). Four of the five variants have caused the disease in humans as well as other animals; RESTV has caused clinical symptoms only in non-human primates. RESTV has caused subclinical infections in humans, producing an antibody response but no visual symptoms or disease state manifestations.

Transmission of the ebolaviruses between natural reservoirs and humans is rare, and outbreaks of Ebola virus disease are often traceable to a single case where an individual has handled the carcass of a gorilla, chimpanzee, bats, or duiker. The virus then spreads person-to-person, especially within families, in hospitals, and during some mortuary rituals where contact among individuals becomes more likely.