Figure 1From: Post-exposure rate of tuberculosis infection among health care workers measured with tuberculin skin test conversion after unprotected exposure to patients with pulmonary tuberculosis: 6-year experience in an Italian teaching hospital Flow chart summarizing HCW screening procedures. T0: TST result in the past (mostly at hiring), T1: TST result at exposure, T2: TST result 3Â months after exposure.Back to article page