How we conquered the deadly smallpox virus - Simona Zompi

The Deadly Smallpox Virus - Smallpox Documentary - History Videos Smallpox was a contagious disease dued to either of 2 infection variations, Variola .\r
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The Deadly Smallpox Virus - Smallpox Documentary - History Videos Smallpox was a contagious disease dued to either of 2 infection variations, Variola .\r
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View full lesson: For 10000 years, humanity suffered from the scourge of .\r
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