Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Tottenham District]
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Diagram 2.—From Dr. J. B. Russell's" A Study of 972 Cases of Small
Pox,"showing the severity of the eruption of Small Pox among patients
with good vaccination marks, among patients with bad vaccination marks,
and among unvaccinated patients, at each of the ages 0-9 years, 10-19
years, 20-29, and 30-39 years.