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 Hillingdon]
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In the Autumn of 1965 a course of vaccination, comprising a dose of killed vaccine followed
by a dose of live vaccine, was offered to all children who were registered for the original trial but
did not receive live vaccine, either because they were allocated to the unvaccinated (control) group,
or because they failed to attend the live vaccine session:—
864 children were offered this treatment, of which:
437 were given killed vaccine, and of these
358 completed the course with a dose of live vaccine.
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