Abstract
EPIDEMIOLOGIC studies and prophylaxis trials over the last decade have radically altered our concepts of tuberculosis. Some old ideas have gone out the window and some important new methods have been developed. Vigorous application of these newer concepts will speed the eradication of tuberculosis in this country. Some of the important new ideas which pertain particularly to children will be discussed. The annual infection rate is low and falling. The falling reactor rates in naval recruits illustrate this point. Among white, male, naval recruits (aged 17-21) 6.6% were reactors to tuberculin in 1949-1951. In 1958-1964 the reactor rate had fallen to 4.1%.
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