There were 166 new cases of paralytic poliomyelitis in the U.S. last week — the most for any week this year.
This brings the number of paralytic cases reported in the U.S. this year to 956. Reporting this, the US. Surgeon-General, Dr Leroy Burney, said this contrasted with 437 cases of crippling polio during the same period last year.
He said, however, that in 1955 — the first year Salk polio Vaccine became available — more than 1,500 paralytic polio victims had been stricken by mid-July.
Almost half the new; paralytic cases in the week ended July 18 occurred in four States: Missouri (20), Texas; (20), Alabama (15) and Tennessee (12).
Dr Burney said he had asked producers to postpone vaccine exports if possible until supplies became more plentiful, and to give preference in domestic shipments to areas with the most polio cases.