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The Nomenclature of Smallpox
For some time the mild form of smallpox has existed in this country. It is generally accepted that it breeds true and does not give rise to the severe form of smallpox. The distinction between the two is recognized under the terms variola major and variola minor in the International List of Causes of Death and in the Nomenclature of Diseases of the Royal College of Physicians. In a letter to the British Medical Journal, Dr. C. K. Millard, health officer for Leicester, points out that it is misleading to write and speak of "smallpox" as if there were only one condition. There is no evidence that variola minor ever changes into variola major either in this country, where tens of thousands of cases have occurred, or in the United States, where the experience is much greater. Dr. Millard refers to an annotation in the British
LONDON. JAMA. 1933;100(16):1267. doi:10.1001/jama.1933.02740160051019