HC Deb 21 April 1959 vol 604 c40W
Mr. Viant

asked the Minister of Health if he is aware that a section of medical opinion hold the view that the Salk vaccine does not prevent poliomyelitis, and that others coming in contact with vaccinated persons may acquire paralysis as a result of such contact; and, in view of the uncertainty of the position, if he is prepared to reconsider the whole subject.

Mr. Walker-Smith

Complete unanimity of opinion on a technical subject is very rare; but I am fully satisfied, on expert medical advice, of the value of vaccination in the prevention of paralytic poliomyelitis.