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Events from the year 1873 in Canada.
In the opening speech to the 1872-1873 Epidemiological Society conference, Inspector-General Robert Lawson drew attention to the recent prevalence of haemorrhagic forms of smallpox in both the United States and Canada, among other countries. During the smallpox pandemic of 1870-1874, the disease had been carried to America by emigrants, where it had already infected thousands, and killed hundreds in eastern cities such as Boston and New York. [2]