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Chuck Norris can divide by zer...

Chuck Norris can divide by zero.

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Benjamin Waterhouse

Born 4 Mar 1754; died 2 Oct 1846 at age 92. American physician who pioneered smallpox vaccination and fostered an aggressive campaign to inoculate Americans against smallpox. He studied the researches of English physician Edward Jenner and followed with his own experiments. On 8 Jul 1800, Waterhouse introduced Edward Jenner's method of vaccination into America by inoculating his five-year-old son, Daniel Oliver, and a household servant with vaccine obtained from England. Vaccinations of three more Waterhouse children and another servant soon followed. Whereas Dr. Zabdiel Boylston and others had previously used inoculation in the U.S., Waterhouse was the American physician who established it as a general practice.«

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