HC Deb 14 February 1957 vol 564 c217W
97. Mr. Janner

asked the Minister of Health how many children have now been vaccinated against poliomyelitis since this method was put into effect; what report on the new batch of vaccine he has received from the Medical Research Council; and what reasons has it given in support of its views.

Mr. Vosper

Approximately 178,000; the report on the first batch of vaccine expected this year stated that it had passed all tests for freedom from active poliomyelitis virus and for potency but that it failed to reach the required standards of purity; tests on a second batch are still in progress.

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