Medicine: Fears Allayed

When it was first tested, the newest TB "wonder" drug, isoniazid (TIME, March 3, 1952), seemed just what the doctor ordered. But cautious physicians withheld their verdict; too many promising drugs had already turned into disappointing failures. As reports on isoniazid piled up, doctors began to suspect trouble. They observed that some strains of tubercle bacilli quickly learned to live with the drug, and they worried lest the new bacilli lead to varieties of TB that might be harder than ever to cure.

In Colorado last week, Dr. Gardner Middlebrook of Denver's National...

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