The Most Lethal Viruses Known To Mankind

Marburg

The Marburg virus, also known as BSL-4, was first identified in 1967 when a group of German and Serbian lab workers contracted a hemorrhagic fever from African green monkeys being used to research vaccines for polio. The Marburg virus, tragically, has no cure and is spread through human contact. Symptoms start with a headache, fever, rash, and then develop into internal bleeding, organ failure, and death. The mortality rate associated with the Marburg virus has progressed from twenty-five percent during the initial outbreak to eighty percent in recent cases.

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