At first, gamma globulin seemed to have proved itself as a weapon of definite though limited value against poliomyelitis. So. certainly, thought Pittsburgh's Dr. William McD. Hammon, the epidemiologist who pioneered mass tests with it (TIME, Nov. 3, 1952). But this week a score of the nation's leading experts on polio and immunization turned thumbs down on G.G. (Dr. Hammon was on the panel, but his position was not disclosed.)
After a three-day discussion of last year's polio outbreaks in communities where gamma globulin was injected into tens of thousands of children and into older members of families in which a case...
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