• Smallpox One of our ancestor’s greatest fears was the highly contagious smallpox, a disease that has thankfully been considered to be eradicated from the earth since 1977. There were two variants of smallpox: Variola major, the more severe variant,  with 30-50% fatalities  and Variola minor, the less severe variant, with 1-2% fatalities. Within seven to seventeen days […] Barbara J Starmans No responses 6 min read January 1, 2015