HC Deb 27 January 1977 vol 924 c722W
Mr. Ashley

asked the Secretary of State for Social Services whether the immunisation programme has any purpose other than protecting individuals who come into contact with the disease; and if he will attach some weighting to the primary purpose and any secondary purpose.

Mr. Ennals

The primary purpose of immunisation is to protect the individual against the disease. If a substantial proportion of the population is immunised this will have the effect of reducing the incidence of the disease and thus reducing the chances of any individual becoming exposed to infection.