How often do health care workers need a tuberculin skin test?
Both paid and unpaid health care workers should receive a two-step tuberculin skin test when they start work in a health care setting unless they have documentation of a negative tuberculin skin test result within the last twelve months or documentation of a positive tuberculin skin test result at any time in the past. The frequency with which they receive additional tuberculin skin tests should be determined by the risk of exposure to persons with active TB disease in their work setting.
