Medicine: Next: Live Vaccine?

While virologists were still trying to decide whether Dr. Salk's "killed" virus vaccine was safe, or how it could be made safer (see above), other experts argued that the killed-virus idea should be abandoned altogether. Leader of this school:

Russian-born Dr. Albert Sabin, 48, director of Cincinnati's Children's Hospital Research Foundation. His alternative: instead of killing a virulent virus, use a living virus that is nonvirulent to begin with.

Short or Long. To buttress his arguments—that a live virus is better and confers longer immunity—Researcher Sabin went to the Eskimos. In one of their isolated communities immunity against polio was shown to have...

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