Changes

==Vaccine==

==Vaccine==

[[Edward Jenner]] ( 1749 – 1823) discovered that milkmaids developed an immunity to smallpox, because they had earlier contact cowpox. Cowpox is an uncommon, mild disease of animals, first observed in cow, closely related to the virus which causes smallpox. This led to the invention of a smallpox vaccine, which Jenner first tested  n May 14, 1796, by  inoculating eight-year-old James Phipps,  the son of his gardener.<ref>Stefan Riedel, MD (January 2005). "Edward Jenner and the history of smallpox and vaccination". Proceedings (Baylor University. Medical Center). Baylor University Medical Center. 18 (1): 21–25.</ref>

[[Edward Jenner]] ( 1749 – 1823) discovered that milkmaids developed an immunity to smallpox, because they had earlier contact cowpox. Cowpox is an uncommon, mild disease of animals, first observed in cows, closely related to the virus which causes smallpox. This led to the invention of a smallpox vaccine, which Jenner first tested  n May 14, 1796, by  inoculating eight-year-old James Phipps,  the son of his gardener.<ref>Stefan Riedel, MD (January 2005). "Edward Jenner and the history of smallpox and vaccination". Proceedings (Baylor University. Medical Center). Baylor University Medical Center. 18 (1): 21–25.</ref>

 

==References==

==References==

<references/>

<references/>

[[Category:Diseases]]

[[Category:Diseases]]