HC Deb 23 October 1956 vol 558 c26W
Mr. Viant

asked the Minister of Health, in view of the fact that all but a very few of the millions of uninoculated children in England and Wales escaped infection this year, what evidence his Department has for claiming that the inoculated owe their freedom to inoculation.

Mr. Turton

I assume that the Question refers to poliomyelitis vaccination. Trials with Salk vaccine in other countries gave good reason for believing that the British Salk type vaccine would confer some protection, but a statistical assessment of the value of the British vaccine is being undertaken by the Medical Research Council and any results will not be known for some months.