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(Chest. 1950;18:111-118.)
© 1950 American College of Chest Physicians

The Significance of Unstable Tuberculin Reactions

IRWIN S. NEIMAN Ph.D., M.D.1

1 The Department of Microbiology and Public Health, and the Student Health Service, of the Chicago Medical School, Chicago, Ill.

1) Findings made as a result of a tuberculin testing program among medical students are reviewed.

2) Results indicate that in a certain percentage of reactors to tuberculin the reaction is unstable, either exhibiting evidence of increased or decreased sensitivity.

3) The causation of this phenomenon is discussed briefly.

4) It is suggested that reactors with a low degree of sensitivity to tuberculin be retested at intervals and that a marked increase in sensitivity be investigated by chest roentgenogram.






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Copyright © 1950 by the American College of Chest Physicians.