[Result of Tuberculosis Epidemiological Investigation in a Workplace].

Tuberculosis (TB) is an airborne infectious disease caused by Mycobacterium tuberculosis. TB is transmitted upon expulsion of the TB bacteria into air through coughing and sneezing, potentially infecting people nearby. Whenever TB cases are reported in a group facility, epidemiological investigations targeting individuals in close contact of the patient are conducted. This field report describes the epidemiological investigation of a tuberculosis outbreak that occurred at a workplace in the Chungcheong region. We analyzed the epidemiological characteristics of patients with tuberculosis, including latent infections, and genotyped patient specimens. Two additional tuberculosis cases within the same workplace were identified and confirmed to be caused by the same type of bacteria through genotypic analysis, indicating transmission within the group. Through this investigation, we reiterate the importance of early response and environmental management in tuberculosis prevention and control in workplace settings.