The Most Lethal Viruses Known To Mankind
Lassa
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Lassa is a virus carried by a West African species of rats known as Mastomys. The virus can be picked up by inhaling air near an infected ratâs feces and humans can spread it through body fluid contact. Lassa fever is responsible for approximately five thousand deaths a year in the West African areas of Liberia and Sierra Leone. Although there is no vaccine currently available, medical professionals have found some success in treating their patients with antiviral drugs during the early stages of the infection. Otherwise, Lassa fever has a fifteen to twenty percent mortality rate.
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