Abstract:

Objective To analyze an aggregation outbreak of tuberculosis mainly in floating population in an electronics Co., Ltd. in Tianjin city, and to explore the prevention and control strategy of tuberculosis in floating population in enterprises and institutions.Methods The case investigation of 19 tuberculosis patients diagnosed in an electronics Co., Ltd in Tianjin from January 2017 to April 2018, screening report of close contacts and field epidemiological investigation report of the electronics co., LTD. were collected. The epidemic characteristics of this outbreak were summarized and analyzed.Results The age of the 19 clinically diagnosed tuberculosis cases were from 21 to 42 years old, with an average of 29.68±7.29 years. Fifteen patients were migrant workers from other provinces and 4 patients were Tianjin registration personnel. Eight cases were in complete machine assembly (LX) department and 7 cases were in electron segment assembly (LVI) department. After the outbreak, the company organized three close contacts screening with the Tanggu Tuberculosis Control Institute. A total of 1796 staff in LX and LVI departments and the dormitory were screened. Seventeen suspected patients were found and 10 cases (58.82%) were confirmed. According to the distribution of time, region and population, this outbreak of tuberculosis was considered to be caused by a typical mixed transmission, that was, the first aggregation was not treated in time, resulting in continued transmission and triggering secondary patients.Conclusion The outbreak of tuberculosis was mainly in floating population, showing a certain aggregation characteristic. Strengthening the responsibility consciousness of medical institutions at various levels, strengthening tuberculosis core knowledge education in the floating population, and improving the communication system of infectious diseases situation between Tuberculosis Prevention and Control Institutions and large-scale labor enterprises are the key to controlling the tuberculosis epidemic among floating population in enterprises and institutions.

Key words: Tuberculosis, pulmonary, Residential mobility, Pandemics, Communicable disease control