Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Fiftieth annual report on the health and sanitary condition of the Metropolitan Borough of Islington
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Showing the rise and fall of Diphtheria for each week in 1905, and the averages for the corresponding weeks
in the ten years 1895-1904.
RED LINES -WEEKLY NOTIFICATIONS.
GREEN LINES-TEN YEARS' AVERAGE.