The Minister of Health (Mr. lain Macleod)
I am advised that the development of an egg vaccine against poliomyelitis is still in the experimental stage; in the circumstances, it would be unwise to reject other available vaccines, subject to all proper safety tests.
I do not accept that. It may well be true that in the end the cultivation in an egg will be the answer, but we would be very unwise to neglect all the other advances made at present until we were sure of that.
§ Mr. Hastings
May I ask the right hon. Gentleman whether vaccines administered by the mouth are, as a general rule, successful?