Edward Jenner full-blown infection. Later, he injected Phipps with variolous material, the routine method of immunization at that time. No disease followed. The boy was later challenged with variolous material and again showed no sign of infection. Donald Hopkins has written, "Jenner's unique contribution was not that he inoculated a few persons with cowpox, but that he then proved [by subsequent challenges] that they were immune to smallpox. Moreover, he demonstrated that the protective cowpox pus could be effectively inoculated from person to person, not just directly from cattle. Jenner successfully tested his hypothesis on 23 additional subjects. Jenner continued his research
Greg Jenner Greg Jenner Greg Jenner is a British historian and author. His appearances on British television and radio discussing history has led to him being termed a ‘celebrity historian’. Jenner studied a History & Archaeology BA and Medieval Studies MA at The University of York. Jenner has worked as a historical consultant on the anarchic "Horrible Histories" books and television shows. The success of "Horrible Histories" Jenner has accredited the fact to a non-patronising approach to children’s television. Jenner is the author of "A Million Years In A Day: A Curious History of Daily Life, From The Stone Age To The