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1.
Article in Chinese | WPRIM | ID: wpr-876713

ABSTRACT

Objective To analyze the endemic situation of schistosomiasis in national surveillance sites of Zhejiang Province, so as to provide the scientific evidence for formulating the new schistosomiasis surveillance program and consolidating schistosomiasis elimination achievements. Methods A total of 54 to 55 national surveillance sites and 6 risk monitoring sites were assigned in historical endemic regions of Zhejiang Province from 2015 to 2019, where the Schistosoma japonicum infections in humans, livestock, snails and wild feces were monitored. All data pertaining to the surveillance results were descriptively analyzed. Results There were 34 530 person-time local residents receiving serological screening for S. japonicum infections in national surveillance sites of Zhejiang Province from 2015 to 2019, and the seroprevalance of S. japonicum infections were 0.29% to 0.68%; however, no egg-positives were detected. During the period from 2015 to 2019, there were 62 086 person-time mobile populations receiving serological screening for S. japonicum infections in national surveillance sites of Zhejiang Province, and the seroprevalance of S. japonicum infections were 0.32% to 0.56%; additionally, there were 27 egg-positives identified, including 3 imported cases with schistosomiasis haematobia and one case with acute schistosomiasis japonica, indicating that the adjusted prevalence of Schistosoma infections were 0.01% to 0.07% among mobile populations. A total of 829 livestock were examined for S. japonicum infections, with no positives detected. There were 10.55 hm2 and 2.89 hm2 snail habitats found in national surveillance sites and risk monitoring sites of Zhejiang Province during the 5-year period, respectively; however, no S. japonicum infections were identified in snails. Moreover, a total of 305 wild feces were tested for S. japonicum infections, and no egg-positives were identified. Conclusions The schistosomiasis elimination achievement have been consolidated in Zhejiang Province; however, the risk factors of re-emerging schistosomiasis have not been completely eliminated, such as residual snails and imported schistosomiasis cases. Further surveillance and control activities of snails and the source of S. japonicum infections should be reinforced.

2.
Article in Chinese | WPRIM | ID: wpr-818946

ABSTRACT

Following the concerted efforts for nearly 70 years, great achievements have been obtained in parasitic diseases control in China, and some important parasitic diseases have been eliminated or moving towards elimination in the country. With the socioeconomic development, the implementation of the “Road and Belt Initiative” and the increase in the international communication and overseas investment, there is a rise in the number of overseas labors, businessmen, students, travelers, visitors and participants in national and international communication activities, resulting in a gradual increase in the number of cases with parasitic diseases imported from endemic to non-endemic areas of China and from foreign countries to China. The increase in the number of imported cases causes new challenges for the elimination of parasitic diseases in China. The paper describes the current status of malaria, schistosomiasis and leishmaniasis, analyzes the challenges for the current control activities, and proposes the control strategies and interventions.

3.
Article in Chinese | WPRIM | ID: wpr-818494

ABSTRACT

Following the concerted efforts for nearly 70 years, great achievements have been obtained in parasitic diseases control in China, and some important parasitic diseases have been eliminated or moving towards elimination in the country. With the socioeconomic development, the implementation of the “Road and Belt Initiative” and the increase in the international communication and overseas investment, there is a rise in the number of overseas labors, businessmen, students, travelers, visitors and participants in national and international communication activities, resulting in a gradual increase in the number of cases with parasitic diseases imported from endemic to non-endemic areas of China and from foreign countries to China. The increase in the number of imported cases causes new challenges for the elimination of parasitic diseases in China. The paper describes the current status of malaria, schistosomiasis and leishmaniasis, analyzes the challenges for the current control activities, and proposes the control strategies and interventions.

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