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1 Pulmonary Disease Service, Veterans Administration Hospital, Long Beach, and the Department of Medicine, U.C.L.A. School of Medicine
Serial tuberculin skin tests in the same person will produce variable results. Reported tuberculin test reversion rates in children vary from 2 to 26 per cent. In some individuals, a questionably positive skin test is the sole base-line for future tests, and high "reversion rates" may result. It is suggested that a child have at least two positive tuberculin skin tests, i.e., induration of 5 mm. or more in diameter read by experienced personnel, before being considered a tuberculin converter. Further studies on children so tested may clarify the wide variation in reported reversion rates.
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