Analysis on the seasonal characteristics of acute Japanese encephalitis in Gansu Province in 1962-2010 by concentration ratio and ci rcular distribution

VernacularTitle:应用集中度及圆分布法分析甘肃省1962－2010年流行性乙型脑炎发病季节性特征
Author: Xuxia WANG ; Xiaoshu ZHANG ; Hui LI
Publication Type:Journal Article
Keywords: concentration ratio; circular distribution; Japanese encephalitis
From: Chinese Journal of Zoonoses 2014;(12):1206-1208
CountryChina
Language:Chinese
Abstract: ABSTRACT:The seasonal characteristics of Japanese encephalitis (JE) in Gansu Province in 1962-2010 were analyzed in order to provide reference for making strategies of disease control and prevention .The JE data is the Epidemic Data between 1962 and 2003 from Gansu CDC ,and National Notifiable Diseases Registry System (NNDRS ,2004-2010) .Concentration ra‐tio and circular distribution method were used in this study .Results showed that the M‐value of the seasonal distribution of JE in 1962-2010 was 0 .825 9 .The corresponding peak date of JE was the 30th August (95% CI:22 July to 7 October) .The Z value of Rayleigh test was 3 506 .092 5 (P<0 .01) .In conclusion ,the concentration and circular distribution method helps us to grasp the JE epidemic peak season more accurately .There were significant seasona1 characteristics for JE in Gansu Province and the epidemic peak was from late July to early October .