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 Islington Borough]
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ACUTE POLIOMYELITIS, 1949.
Key J July9 Cases.
„ A August 6 „
„ S September 17 „
„ O October 18 „
„ N November 8 ,,
„ D December 4 „