Answer:
The Ebola virus (Ebolavirus) is often considered the most notorious and deadliest among the filovirus "sisters." Ebola virus disease (EVD) has several species, with the Zaire ebolavirus being particularly deadly, known for its high mortality rate in humans. During outbreaks, the case fatality rate (CFR) of Zaire ebolavirus can range from 25% to 90%, depending on various factors including access to medical care and the specific outbreak strain. Some outbreaks have seen CFRs approaching 90%, making it one of the most lethal viruses known to infect humans. EVD is characterized by severe symptoms such as fever, hemorrhaging, and multiple organ failure, and it poses a significant public health threat when outbreaks occur, necessitating rapid containment and treatment measures.
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