Small pox was a terrible curse. It killed over 200 million people in the 20th century. Up to 40% of infected adults & about 80% of infected children died of the two variola virus strains of the disease. The discovery …
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Small pox was a terrible curse. It killed over 200 million people in the 20th century. Up to 40% of infected adults & about 80% of infected children died of the two variola virus strains of the disease. The discovery …
Continue Reading