Risk factors associated with tuberculosis infection among health care workers in Inner Mongolia, China
OBJECTIVE: To measure the prevalence of and risk factors for TB infection among HCWs in Inner Mongolia, China.
DESIGN: Between April and August 2010, we administered QuantiFERON®-TB Gold In-Tube (QFT-GIT) tests, skin tests using Chinese tuberculin (TST) and surveys among HCWs at an infectious diseases hospital and a general medical hospital. We assessed whether demographic characteristics, personal exposure and work exposure were associated with QFT-GIT and TST positivity, and assessed agreement between test results.
RESULTS: Of 999 HCWs, 683 (68%) were QFT-GIT-positive, which was associated with greater age, longer HCW career, TB disease in a co-worker and greater daily patient exposure using multivariable analysis. TST reactions ≥ 5 mm occurred in 69% of the HCWs; agreement between test results was low ( 0.22).
CONCLUSIONS: The prevalence of TB infection among HCWs in Inner Mongolia is high; infection was associated with occupational exposure. Results from locally conducted TST are difficult to interpret. In China, TB infection control in health care facilities should be strengthened.
Document Type: Research Article
Affiliations: 1: Chinese Center for Disease Control and Prevention, Beijing, China 2: United States Centers for Disease Control and Prevention, Atlanta, Georgia, USA 3: United States Centers for Disease Control and Prevention, Atlanta, Georgia, USA; China–US Collaborative Program on Emerging and Re-Emerging Infectious Diseases, Beijing, China 4: Inner Mongolia Center for Tuberculosis Control and Prevention, Hohhot, China 5: Ulanqab Center for Tuberculosis Control and Prevention, Ulanqab, China
Publication date: 2012-11-01
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