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1.
Article in Chinese | WPRIM | ID: wpr-665512

ABSTRACT

Objective To understand the epidemiological trend of imported malaria and its monitoring and control effect in Yancheng City from 2011 to 2015,so as to provide the evidence for adjusting the prevention and control strategy. Methods The data of malaria surveillance,epidemic,prevention and control were collected and analyzed in the districts and counties of Yancheng City from 2011 to 2015. Results From 2011 to 2015,there were 104 imported malaria cases reported,and the most cases(52 cases,50%)were reported from Jianhu County. Most of the cases were males(only 2 females),the average age was 38.8 years,and the occupation was mainly labor service worker abroad(94 cases,97%). The infection source of these cases mainly came from Africa. From 2011 to 2015,151980 fever patients received malaria blood tests,and the positive rate was 0.07%. Falciparum malaria cases were the most(90 cases,86.5%). The confirmed diagnostic rate of malaria within 24 hours in-creased year by year. All the 104 patients received the standardized treatment. Conclusion There are no local malaria cases in Yancheng City from 2011 to2015,and in the next stage,the monitoring and prevention should be focused on imported malaria, including shortening the confirmed diagnostic time and improving the diagnostic efficiency.

2.
Article in Chinese | WPRIM | ID: wpr-665416

ABSTRACT

Objective To understand the forming cause of the Oncomelania hupensis snail-existent non-endemic areas of schistosomiasis(SENEAS),and to verify the conclusion of previous studies,so as to provide the evidence for schistosomiasis monitoring in such areas in Nantong City,Jiangsu Province. Methods The controlled field tests were carried out to observe the O. hupensis snails artificially infected by schistosome miracidia in SENEAS. The influence of the soil from SENEAS and the en-demic areas on O. hupensis snails artificially infected by miracidia were observed. Results All the experimental snails could be infected by schistosome miracidia except the smooth-shell snails from Tangyuan Village in the controlled field test environment of SENEAS or the endemic areas. The infection rates of the smooth-shell snails were lower than those of the ribbed-shell snails , but there were no statistically significant differences. The mortality rates of the smooth-shell snails were higher than those of the ribbed-shell snails,which were statistically significant (χ2Xindian = 135.118,χ2Shuangdian = 122.836,χ2Baipu =154.436,χ2Dingyan =138.288,χ2Control=151.923,all P<0.01). There were no significant differences in the infection rates of snails between each test group of the soil from SENEAS and the endemic areas(χ2Rugao=0.071,χ2Rudong=0.216,both P>0.05). Also there was no signifi-cant difference between each test group and the control group without soil(χ2=7.148,P>0.05). Conclusion It is likely to form the spread of schistosomiasis in SENEAS in Nantong City with sufficient amount of infection source of schistosomiasis im-ported. It is still necessary to implement the surveillance of schistosomiasis and O. hupensis snails in Nantong City.

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