Analysis of risk monitoring results for schistosomiasis in Hubei Province from 2015 to 2022
Objective To analyze the epidemic situation and risk factors of schistosomiasis in Hubei Province from 2015 to 2022,and to provide a scientific basis for the goal of all schistosomiasis-endemic counties in the province reaching the elimination standard by 2030.Methods According to the requirements of the National Schistosomiasis Surveillance Plan(2014 edition)and National Schistosomiasis Surveillance Plan(2020 edition),the snail situation and the risk of wild fecal transmission,along with regional distribution in schistosomiasis endemic areas in Hubei Province from 2015 to 2022 were analyzed and the risk was rated.Results From 2015 to 2022,a total of 60 203 risk monitoring environments per time was carried out,with 10 223 460 frames of snails inspected,capturing 2 344 094 snails,among which 1 357 479 live snails,and an average density ranging from 0.07-0.29 snails/0.11 m2.In 2015 and 2017,11 and 3 schistosomiasis-infected snails were detected respectively,corresponding to 3 and 2 positive snail environments.The proportion of wild feces distribution environment in the total monitoring environment showed a downward trend,with cow dung accounting for the highest proportion(69.27%).A total of 19 549 wild feces were collected,of which 78 were positive for schistosomiasis.Since 2018,only one positive cow dung was found in 2019,and none in other years.From 2015 to 2020,the density of live snails and the proportion of wild feces in the monitoring environment in each risk monitoring county(city,district)had significantly reduced,with areas of higher snail density such as Gongan County,Yangxin County with higher density of live snails decreasing to below 1 per 0.11 m2 from 2017.Among the 60 203 risk monitoring environments,53 were identified as GradeⅠrisk(not detected since 2020),1 999 as GradeⅡrisk,and 58 030 as GradeⅢrisk.Conclusions From 2015 to 2022,the overall schistosomiasis epidemic in Hubei Province showed a downward trend.However,the risk of schistosomiasis transmission still exists in some areas.In the future,we should continue to strengthen the epidemic monitoring in key areas,improve the sensitivity and level of monitoring,and prevent the rebound of the epidemic.
Schistosomiasisepidemic situationrisk monitorHubei Province
NETL
NSTL
万方数据
