The variola virus causes smallpox. The disease is at least 3000 years old, confirmed in China and India, with a few isolated cases in North Africa. There is no mention in Europe until the 6th century.
During the 17th and 18th Centuries smallpox was the most serious infectious disease in The West and accounted for a substantial proportion of deaths, especially among town dwellers. The mortality rate varied regionally, with 10% in Europe and 90% in America.
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specific information to be better educated. By being informed about these viruses, they could further read on about other diseases.
I personally am not too afraid of catching smallpox in my lifetime. That is also making the assumption that no terrorist or human is going to get the vials of smallpox to spread around. If that were to happen, at least I would know what was going on and what smallpox could do to me.