In 1796 Edward Jenner, an English country doctor, noticed that milkmaids who suffered from cowpox appeared resistant to smallpox. He pioneered “vaccination” using material from the pustules of cows suffering from the related virus. It was the most significant breakthrough in the treatment and prevention of infectious disease at the time. View the following video about Edward Jenner’s discovery:
Edward Jenner-Discovery. Accessed at https://www.youtube.com/watch?v=l_3dcY_cwN0 on September 13, 2016.
Conduct some independent research on the term “herd immunity“. How does it work and what happens when herd immunity breaks down?
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