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Objective To explore the spatial distribution and pattern of tuberculosis(TB) with spatial autocorrelation statistics and center-of-gravity(COG) model in Yinzhou, Ningbo.To explore where and when the new cases haapen,that is to say,to explore the spatio-temporal hot spots to know the spatio-temporal cluster of TB,aim to support the theory evidence for the policy of TB prevention and control and the reference for the same study.Methods Accumulated the surveillance data of TB in Yinzhou from 2005 to 2008,and translated the data into SHP format data.Geoda095i was used to analysis the data to obtain quantile map,Moran’I,Moran’I scatter plot,local Moran’I,cluster map,COG of TB in Yinzhou.Results The Moran’I from 2005 to 2008 were 0.3638, 0.4722,0.4557,0.4619,and the p-value of them were 0.0040,0.0030,0.0020,0.0010. According to LISA analysis,Gao-qiao,Shi-qi,Zhong-gong-miao,Jiang-shan,Yun-long located in high-high region in 2005,and Zhang-shui,Long-guan located in low-low region;Shi-qi,Zhong-gong-miao,Jiang-shan,Yun-long,Xin-ying located in high-high region in 2006,and Zhang-shui,Long-guan located in low-low region;Gao-qiao, Ji-shi-gang,Shi-qi,Zhong-gong-miao,Jiang-shan located in high-high region in 2007, Zhang-shui located in low-low region,and Yun-long located in low-high region; Gao-qiao,Shi-qi,Zhong-gong-miao,Jiang-shan,Yun-long located in high-high region in 2008,and Zhang-shui,Zhan-qi located in low-low region;all the outcomes had the significance(P＜0.05) with statistical test.When it was concerned with permanent residents,the Moran’I from 2005 to 2008 were 0.3732,0.2788,0.3263,0.2837,and the p-value of them were 0.0050,0.0160,0.0060,0.0160.According to LISA analysis, Gao-qiao,Ji-shi-gang,Shi-qi,Zhong-gong-miao,Jiang-shan located in high-high region in 2005,and Zhang-shui,Long-guan located in low-low region;Shi-qi, Zhong-gong-miao,Jiang-shan located in high-high region in 2006,Zhang-shui, Long-guan located in low-low region,and Yun-long located in low-high region; Ji-shi-gang,Shi-qi,Jiang-shan located in high-high region in 2007,and Yun-long located in low-high region;Gao-qiao,Shi-qi,Zhong-gong-miao,Jiang-shan located in high-high region in 2008,and Yun-long located in low-high region;all the outcomes had the significance(P＜0.05) with statistical test.When it was concerned with migrant residents,the Moran’I from 2005 to 2008 were 0.2433,0.5440,0.5041,0.5230,and the p-value of them were 0.0160,0.0010,0.0020,0.0010.According to LISA analysis, Shi-qi,Zhong-gong-miao,Jiang-shan located in high-high region in 2005,Zhang-shui located in low-low region,and Yun-long located in low-high region;Mei-xu,Shi-qi, Zhong-gong-miao,Jiang-shan,Yun-long,Xia-ying located in high-high region in 2006, and Zhang-shui,Long-guan,Zhan-qi,Xian-xiang,Tang-xi,Dong-wu located in low-low region;Gao-qiao,Ji-shi-gang,Shi-qi,Jiang-shan,Zhong-gong-miao,Yun-long located in high-high region in 2007,and Zhang-shui,Long-guan,Zhan-qi,Xian-xiang, Dong-wu located in low-low region;Shi-qi,Zhong-gong-miao,Jiang-shan,Yun-long located in high-high region in 2008,Zhang-shui,Long-guan,Zhan-qi,Xian-xiang, Tang-xi located in low-low region,and Mei-xu located in low-high region;all the outcomes had the significance(P＜0.05) with statistical test.Both of permanent and migrant residents,the COG of TB moved within a narrow range from 2005 to 2008. Conclusion The spatial distribution of TB in Yinzhou was not random,but spatially correlated with each other.Gao-qiao,Shi-qi,Zhong-gong-miao,Jiang-shan,may be the hot spots in Yinzhou.The COG of TB in Yinzhou was in Zhong-gong-miao,and moved within a narrow range from 2005 to 2008.TB disease has diffusivity for the infectivity, and it may be clustering from east and west to the middle of Yinzhou.The interventions to control TB should be strengthened especially in the middle of Yinzhou.
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