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January 18, 1941


Author Affiliations

Department of Public Health, San Francisco.

JAMA. 1941;116(3):247-248. doi:10.1001/jama.1941.02820030069028

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To the Editor:—  Even in normal times, port cities are confronted with health problems of unique character. San Francisco always has had certain definite health problems with regard to travelers coming from the Orient. Recently, however, a new angle has developed. Early in 1940 roentgen examinations of the positive reactors to tuberculin in the routine testing done in San Francisco schools showed an unusually large number of Chinese boys in junior high school with far advanced clinical tuberculosis.For a period of ten years past, high school and junior high school students in this city have received tuberculin tests every year. The tests done are an intracutaneous Mantoux of 1: 1,000 dilution. Roentgenograms of the positive reactors are made and the negative reactors are retested at regular intervals throughout their school life. The incidence of clinical tuberculosis and the mortality are considerably higher in the Chinese population than for the

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