§ Mr. Masonasked the Minister of Health if he will give an assurance that everything possible is being done to check the poliomyelitis rate in Barnsley; and how far the visit of Dr. Bradley, one of his senior officials, to Barnsley has resulted in the source of the infection being traced.
§ Mr. Iain MacleodI am satisfied that the best measures known at the present time are being applied to control the outbreak. Unfortunately existing techniques do not enable us to identify with any certainty the origin of poliomyelitis in a community.
§ Mr. Hobsonasked the Minister of Health if he is aware that the manufacturers of the poliomyelitis vaccine in this country obtain the virus of the three types of poliomyelitis and grow this on monkey kidney tissue; how far he has examined alternative processes of manufacture; and if he will make a statement.
§ Mr. Iain MacleodYes, I am aware of the methods employed. The Medical Research Council Committee concerned is, I understand, actively considering the use of alternative culture material.