HC Deb 25 November 1957 vol 578 cc79-81W
53. Dr. Bennett

asked the Minister of Health what positive evidence he has that the live poliomyelitis virus discharged into the sewers from infected persons is incapable of spreading the disease among swimmers who bathe at an outlet of untreated sewage.

Mr. Walker-Smith

None, but while the possibility that sewage may play some part in the spread of poliomyelitis cannot be ruled out, there is no evidence that the disease has been contracted from this source.