
Source: George Henry Fox - Fox, George Henry (1886) Photographic illustrations of skin diseases (2nd ed.),
In 1776, British troops managed to end the American siege of Quebec by innoculating prostitutes with smallpox and sending them out of the city. This early method of bioweapons transmitted the disease to the soldiers.
Source: NewScientist, 28 Nov 2015, p. 15
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Quebec, Canada
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