Abstract:

Objective To analyze the characteristics of pulmonary tuberculosis (PTB) in floating population in Guangzhou City, and provide evidence for PTB control strategies of floating population. Methods The data of PTB patients of floating population in Guangzhou City from 2014 to 2020 was collected in the “Tuberculosis Information Management System”, which included age, gender, occupation, patient discovery method, treatment classification, etiological results and so on. The distribution characteristics of this population were analyzed, and the seasonal effect of time series was analyzed by using seasonal index. Results From 2014 to 2020, a total of 68329 cases of PTB patients were registered in Guangzhou, among which 30692 cases were from floating population, accounting for 44.92% of total cases, from 30.81% (3530/11457) in 2014 to 50.73% (4185/8249) in 2020 (χ²_trend=441.57, P<0.01). The median age was 33 (23,46) years and the main age group was 25-34 years old (32.69%, 10034/30692). The main occupation was housework and unemployment (45.85%, 14073/30692). The main source of patients was due to symptoms (44.22%, 13572/30692), and the patients were generally delayed (47.12%, 14462/30692). With the change of the year, the proportion of provincial mobility of household registration type increased (χ²=208.57, P<0.01), increasing from 25.89% (914/3530) in 2014 to 36.39% (1523/4185) in 2020; the source of clinical consultation decreased first then increased (χ²=971.89, P<0.01), from 45.69% (1613/3530) in 2014 to 30.74% (1285/4180) in 2017, and then up to 57.51% (2407/4185) in 2020. The prevalence of PTB in floating population was from March to September per year, with peak incidence in April and July. The proportion of PTB patients of floating population mainly concentrated in Baiyun and Tianhe Districts, increasing from 13.85% (489/3530) and 11.47% (405/3530) in 2014 to 24.64% (1031/4185) and 16.94% (709/4185) in 2020, respectively. Conclusion The epidemic situation of PTB among the floating population in Guangzhou is still severe, and shows seasonal variation. The patients are mainly male, young adults, housekeeping, housework and unemployment and have high delay rates and regional distribution, corresponding prevention and control strategies should be formulated according to the epidemic characteristics.

Key words: Tuberculosis,pulmonary, Residential mobility, Epidemiologic study characteristics (topic)