Discovery of Vaccination
Storyboard Text
- Could catching cowpox prevent people from getting smallpox?
- I think I can stop you from ever getting smallpox! It won't hurt... much.
- Edward Jenner, an english physician and scientist was much interested in conquering the deadly smallpox. One day, he found a young dairymaid, Sarah Nelms, who had fresh cowpox lesions on her hands and arms.
- Noting the common observation that milkmaids were generally immune to smallpox, Jenner suggested that pus in the blisters that milkmaids received from cowpox protected them from small pox.
- Jenner tested his hypothesis by using matter from Nelm's lesions and inoculating it to an 8 yr old boy, James Phipps.
- VaccinaDear the British Government,The initial source of infection was a disease of horses, called "the grease", which was transferred to cattle by farm workers, transformed, and then manifested as cowpox fails to produce a smallpox infection, immunity to smallpox has been achieved.Dr. Edward Jenner
- Subsequently, the boy developed mild fever and discomfort in the axillae. Nine days after the procedure he felt cold and had lost his appetite.
- The next day he was much better. Jenner inoculated the boy again, this time with matter from a fresh smallpox lesion. No disease developed, and Jenner concluded that protection was complete.
- Later, despite errors and many controversies, the use of vaccination spread rapidly in England. Then in 1840, variolation became prohibited in England and the people were provided vaccination using cowpox free of cost.
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