1 critical aspect was a scientific comprehension concerning the virus itself. Virologists had come to believe that variola could survive and replicate only inside of human beings. Many viruses that result in disease in individuals can also infect animals — think of Jenner’s cowpox. But variola experienced misplaced a chance https://socialaffluent.com/story2258039/5-essential-elements-for-culture-of-the-united-states