Abstract:

Objective  To investigate the prevalence patterns of infectious diseases in the migrant population in Chengdu city for supporting evidence to the local administration in planning preventive strategies measures. Methods  By reference to the information from the reporting systems of China CDC, and with stratified random sampling methods, we conducted a telephone survey on the patients suffering from notifiable infectious disease, including their current places and places of registration, and the prevalence of the infectious disease was compared between the migrants and local residents. Results  Of the 2 705 patients with notifiable infectious disease, 666 were migrants. The ages were primarily under 15 years, which was comparable to the permanent residents. Infectious disease more affected the migrants ranging in age from 15 to 29 years(χ2=73.98, P<0.001), yet less in those aged over 45 years(P<0.001). The prevalence of infectious disease varied in migrants living in different areas within the city(χ2=144.15,P<0.001), and the diseases were more prevalent in those living in the central urban and semi-urban areas. Difference was significant between the migrants and permanent population regarding the ratios of infection transmission route for intestinal diseases, respiratory disorders and sexually transmitted diseases(P<0.05). The top 5 notifiable infectious entity were nearly identical in the migrants with the permanent population. Conclusion  By the current prevalence status of infectious disease in Chengdu city, the population living in the central urban and semi-urban should be closely monitored, particularly in tuberculosis, syphilis, gonorrhea, respiratory diseases and sexually transmitted diseases.

Key words: Migrant population, Infectious disease, Sampling survey, Chengdu