Spatial characteristics of the epidemic of pulmonary tuberculosis in Rongchang District of Chongqing Municipality, 2011-2021
XIE Jia-wei1, XIONG Hua-li1, JIANG Hui1, YANG Li1, FAN An-hua1, TANG Da-yi2
1. Rongchang District Center for Disease Control and Prevention, Chongqing 402460, China; 2. Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, China
Abstract:Objective To describe the spatial features of the epidemic of pulmonary tuberculosis (PTB) in Rongchang District of Chongqing Municipality from 2011 to 2021, and to provide a scientific basis for adjusting PTB prevention and control measures. Methods We retrieved the data about PTB incidence from January 1, 2011 to December 31, 2021 from Tuberculosis Management Information System of the China Disease Prevention and Control Information System. GeoDa 1.16, SatScan 9.6 and ArcGIS 10.4.1 were used for spatial autocorrelation analysis, the spatiotemporal scan statistics and visualizing the results. Results A total of 5,684 new cases of PTB were reported in Rongchang District from 2011 to 2021, with an average annual reported incidence rate of 74.93/100,000. The incidence of PTB in Rongchang District in 2011-2021 showed an obvious spatial aggregation (Moran’s I value ranged from 0.209 to 0.307), and the high-high cluster areas were mainly distributed in the central area (including Changyuan Street, Changzhou Street, Guangshun Street, Ronglong Town, and Renyi Town) and the southwest area (including Anfu Street and Qingsheng Town). There was a spatiotemporal aggregation in the incidence of PTB in Rongchang District in 2011-2021. Two PTB clustering areas were identified by the spatiotemporal scan statistics, covering 8 streets (or towns), and the clustering time was from 2011 to 2016. Conclusion PTB in Rongchang District in 2011-2021 had been controlled to a certain extent, but there was still an obvious spatiotemporal aggregation. Prevention and control in large streets (or towns) such as Changyuan, Changzhou, Guangshun, Ronglong and Renyi should be strengthened, while the under-reporting investigation should be carried out in small towns such as Tonggu, Qingliu and Yuanjue.