Needle Free Vaccination Articles & Analysis: Older
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The first vaccine, created by Edward Jenner, was used to fight against cowpox in 1796 in England. Though rarely seen today, cowpox, a viral infection, was contracted often by milkmaids before the late 1700s. When someone touched the udder of a cow that was infected, they could contract cowpox. The cowpox virus is like smallpox; however, it is not as deadly as smallpox. Smallpox is a virus that ...