Ebola, also known as Ebola virus disease (EVD), is a severe and often fatal illness that is caused by a virus from the Filoviridae family. It was first identified in 1976 in the Democratic Republic of Congo (DRC) and has since caused outbreaks in several African countries.
The Ebola virus is transmitted through direct contact with the blood, secretions, organs, or other bodily fluids of infected animals, such as bats and primates. It can also be transmitted to humans through contact with objects that have been contaminated with the virus, such as needles and syringes. Once a person is infected, the virus can be transmitted to other people through direct contact with the blood, secretions, or other bodily fluids of the infected person.
One of the reasons that Ebola did not become a pandemic is that it is not an easily transmitted disease. It is not transmitted through the air like influenza, for example, but rather through direct contact with bodily fluids. This means that in order for an Ebola outbreak to occur, there must be close contact between an infected person and a susceptible person. This is less likely to happen in areas with good infection control practices, such as hospitals and healthcare settings.
Another reason that Ebola did not become a pandemic is because it is not a particularly virulent virus. It has a relatively low reproductive number, which means that it does not spread as easily as some other infectious diseases. This, combined with the fact that it is not easily transmitted, means that it is less likely to cause widespread outbreaks.
In addition, the Ebola virus has a relatively short incubation period, which is the time between infection and the onset of symptoms. This means that people who are infected with the virus typically develop symptoms within a few days to a week of being infected. This allows for early identification and isolation of infected individuals, which can help to contain the spread of the virus.
Finally, the Ebola virus is relatively fragile and does not survive for long outside of the body. This means that it is less likely to be transmitted through environmental sources, such as air or water.
Overall, the combination of the fact that Ebola is not easily transmitted, is not particularly virulent, has a short incubation period, and is fragile outside of the body all contributed to the fact that it did not become a pandemic. However, it is still important to be vigilant and prepared for future outbreaks, as the Ebola virus can still cause significant morbidity and mortality in affected areas.