The Most Lethal Viruses Known To Mankind

Smallpox

Before the World Health Assembly declared the world free of smallpox in 1980, the virus killed one in every three individuals it infected. More than three hundred million individuals died from smallpox in the twentieth century alone before an effective vaccination came to the rescue. The smallpox patients who survived often went blind and were left with permanent scars. Mortality rates were highest in civilizations in Europe. Symptoms of smallpox included issues like a severe rash, blistering, high fever, and oozing skin sores.

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