Among the many living things that make men ill, the most baffling are the tiniest-the viruses. Drugs seldom do any good. The best defense is the immunity that comes after a mild attack; hence one of the big drives in medicine is the search for mild attackers, i.e., vaccines.
In Toronto last week, a gathering of pediatricians heard from an expert a quiet, restrained, but potentially epochal progress report on vaccine research. The speaker was Dr. Joseph Stokes Jr.. chief physician of the Children's Hospital in Philadelphia, who has been working on a vaccine...
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