Burney Credits Salk Vaccine in Polio Pattern
Surgeon General Leroy E. Burney said the year’s polio pattern supports Salk vaccine effectiveness. A survey of 1,446 of 3,434 paralytic cases found 43.7 percent unvaccinated or partly vaccinated, with 1952 polio total far higher. He noted over 50 million under age zero still not fully vaccinated.