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| Epidemiological investigation of a cluster of rifampicin-resistant pulmonary tuberculosis |
| LI Weidan, ZHANG Zigen
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| Department of HIV/AIDS and Tuberculosis Control and Prevention, Jinhua Center for Disease Control and Prevention, Jinhua, Zhejiang 321000, China |
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Abstract In November 2023, the Jinhua Center for Disease Control and Prevention received a report from a company indicating 3 cases of pulmonary tuberculosis. An on-site epidemiological investigation was immediately conducted. A total of 3 cases were reported, with an attack rate of 9.68%. The first case had cough and expectoration for more than a year, and diagnosed with rifampicin-resistant pulmonary tuberculosis on November 16, 2023, and the other 2 cases were his colleagues who were diagnosed with rifampicin-resistant pulmonary tuberculosis and etiology negative pulmonary tuberculosis on November 20 and 21, respectively. Based on the on-site investigation and laboratory test results, it was a cluster of rifampicin-resistant pulmonary tuberculosis. The likely cause of the spread might be the lack of timely medical attention for the first case, which led to the infection of other colleagues through contact transmission. Eight close contacts screened positive for purified protein derivative (PDD) or recombinantMycobacterium tuberculosisfusion protein skin test (EC-ST), given the injection of mycobaeterium vaccae vaccine, and no new cases of tuberculosis detected in the 3-month follow-up. The outbreak highlighted the necessity for the company to enhance health education concerning the prevention and treatment of pulmonary tuberculosis, implement regular health monitoring and enhance the physical examination for employee in order to increase sensitivity to pulmonary tuberculosis.
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Received: 04 March 2024
Revised: 24 June 2024
Published: 19 July 2024
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