Epidemiological characteristics and spatio-temporal clustering of visceral leishmaniasis in Henan Province
Objective To analyze the epidemiological characteristics and spatio-temporal clustering of visceral leishmaniasis(VL)in Henan Province,and provide a theoretical basis for epidemic surveillance and formulating pre-cise prevention and control measures.Methods The data on VL cases reported in Henan Province were collected from the Infectious Disease Surveillance Reporting and Management System from 2016 to 2022.The epidemiological characteristics of VL repored cases were analyzed using descriptive analysis.SaTScan v10.1 software was used for spa-tio-temporal clustering analysis.Results A total of 68 VL cases were reported in Henan Province from 2016 to 2022,with an annual average incidence rate of 0.010/100 000 showing an increasing trend year by year(x2=5.206,P＜0.05).The cases were reported throughout the year except for August,and the peak period of onset was from March to June,accounting for 50.0％(34/68)of reported cases.The ratio of males and females was 2.6∶1,and the annual average incidence rates in males and females were 0.011/100 000 and 0.004/100 000,respectively.The age range of reported cases was from 7 months to 71 years old.The majority of patients were in the 0-2 group and the ≥ 60 years age groups,accounting for 27.9％(19/68)and 25.0％(17/68),respectively.Farmers(42.7％,29/68)and scattered resident children(32.4％,22/68)were the dominant high-risk population.Among the 68 reported cases,61 were local cases and 7 were imported from other provinces.The 61 local cases were distributed in 13 counties(cities,districts)among 5 provincial-level cities,including Zhengzhou,Luoyang,Anyang,Hebi and Sanmenxia.The results of spatio-temporal clustering analysis showed that two significant clustering regions(P＜0.01)were detected for VL in Henan Province,with the clustering centres being Linzhou in Anyang City and Gongyi in Zhengzhou City,respectively.Con-clusion VL had been on the rise in Henan Province,with spatial-temporal clustering.It is necessary to carry out precise surveillance and implement prevention and control measures in different epidemic areas to prevent the ongoing spread of the epidemic.
Visceral leishmaniasisEpidemic characteristicsSpatio-temporal clusteringHenan Province
NETL
NSTL
万方数据
