Investigation of epidemic status of Clonorchiasis sinensis in Pucheng County from 2016 to 2021
Objective To analyzed the infection present and control efficiency of Clonorchis sinensis in Pucheng County,so as to provide scientific basis for prevention and control work in the future.Methods From 2016 to 2021,according to the requirements of National Key Parasitic Disease Surveillance Program and the geographical orientation,Pucheng County was divided into 5 districts,namely,east,south,west,north and middle.Each district randomly selected people from 1 township and 1 village as the survey objects.Each village collected 30 g of feces from every resident over the age of 3,and 1 000 people were monitored in the county every year.The modified Kato's thick smear(Kato-kata)method(one piece,two tests)was used for microscopic examination of eggs.All kinds of freshwater fish and shrimp were detected at each survey site every year,and the muscle of the fish was taken for microscope examination.Each survey site randomly collected field dog feces or cat feces every year,and the eggs were detected by water precipitation method.150 people were randomly selected from the tested population every year to conduct a questionnaire survey on Clonorchiasis and other related knowledge,and the score and awareness rate(pass rate)were calculated.Chi-square trend test was used to compare the rates,and P＜0.05 was considered statistically significant.Results A total of 6 187 people were investigated and 25 were infected with Clonorchis sinensis,with an infection rate of 0.40％from 2016 to 2021.The infection rates from 2016 to 2021 were 0.95％,0.40％,0.43％,0.39％,0.35％and 0.17％,respectively.A total of 646 freshwater fish of 3 species were examined,and recorded 375 positives,with an infection rate 58.05％.Examination for 152 feces samples of wild animals were conducted,and found 8 Clonorchis sinensis egg positive,the infection rates was 5.26％.Total of 900 valid responders were obtained,showing an overall anareness rate 47.89％(431/900).Overall awareness rates from 2016 to 2021 were 21.33％(32/150),30.00％(45/150),44.00％(66/150),56.67％(85/150),64.67％(97/150)and 70.67％(106/150),respectively,and the awareness rate of Clonorchis sinensis rised in resident in Pucheng County(x2trend=115.23,P＜0.001).Conclusions The infection rate of Clonorchis sinensis was low in Pucheng County,and the control effect was remarkable.The residents had low awareness rate of Clonorchis sinensis.The infection rate of freshwater fish was higher.Health education and control measures should be strengthened.
Clonorchis sinensisepidemic statusanalysisPucheng County
NETL
NSTL
万方数据
