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 London County Council]
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ENTERIC FEVER 1896-1903.
DIAGRAM shewing cases of Enteric Fever notified during each month of the years 1896—1903 in
certain selected areas in London distinguishing (a) cases aged 3—25 inclusive from cases
at other ages; (b) cases notified within 10 days of the notification of a first case in the same
house, and (c) cases similarly notified after a longer interval than 10 days.
N.B.—Each square represents one case.