In 2004, two employees in a skilled nursing facility developed active pulmonary tuberculosis (TB). Both employees were purified protein derivative (PPD) test positive for more than 10 years before developing the disease. Four employees converted to positive PPD status during the exposure investigation—two at baseline and two at the 12-week follow up. No additional cases of active TB were found. Several changes and additions have been made to the TB screening protocol after these two index cases were discovered.
References
1.
Guidelines for preventing the transmission of mycobacterium tuberculosis in health-care facilities. (1994). MMWR, 43(RR-13), 1–132.
2.
JonesT.F., & SchaffnerW. (2001). A test of tuberculin quality: Tried and true or tired and tattered?Infection Control and Hospital Epidemiology, 22(8), 479–480.
3.
KendigE.L.Jr., KirkpatrickB.V., CarterW.H., HillF.A., CaldwellK., & EntwistleM. (1998). Underreading of the tuberculin skin test reaction. Chest, 113(5), 1175–1177.
4.
MazurekG.H., & VillarinoM.E. (2003). Guidelines for using the QuantiFERON-tbtest for diagnosing latent mycobacterium tuberculosis infection. MMWR, 52(RR-2), 15–18.
5.
Recommendations for prevention and control of tuberculosis among foreign-born persons: Report of the Working Group on Tuberculosis among Foreign-Born Persons. (1998). MMWR, 47(RR-16), 1–29.
6.
SchumannS.C. (2003). Tuberculosis and the healthcare worker. Occupational Health Tracker, 6(3), 1–5.
7.
Targeted tuberculin testing and treatment of latent tuberculosis infection. (2000). MMWR, 49(RR-6), 1–51.
