HC Deb 26 February 1952 vol 496 c144W
Mr. Viant

asked the Minister of Health the number of cases of poliomyelitis recorded prior to 1942; and the ages of the cases.

Mr. Crookshank

There were 20,332 cases of poliomyelitis (including 1,785 cases of polio-encephalitis) notified between 1st September, 1912, when the disease was made notifiable, and 31st December, 1941. The ages of these cases are not available.