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To assess the effectiveness of infectious source control at various stages of transmission control of schistosomiasis in Eryuan County of Yunnan Province, so as to provide insights into the further monitoring and management of infectious sources of schistosomiasis.Wenbi Village, a plateau subtype region and Qiandian Village, a mountain subtype region in Eryuan County were selected as the study areas. The species, schistosome infection and transmission capability of infectious sources were investigated in Wenbi and Qiandian villages in 2011 and 2018 and were compared.Schistosome infections were detected in human, bovine, horse, dog and mouse in Qiandian Village in 2011, with positive rates of 1.19%, 0.91%, 1.25%, 3.13% and 0.95%, respectively, and human, bovine and dog were found to have schistosome infections, with positive rates of 0.76%, 1.66% and 9.30%, respectively. However, no infections were identified in human, bovine, horse, pig, dog, sheep or mouse in these two villages in 2018. A total of 731 wild feces were collected in both villages in 2011. In Qiandian Village, horse, bovine and dog feces accounted for 34.40%, 29.80% and 20.20% of all fecal samples, and dog and horse feces were found to have schistosome infections (11.94% and 6.90% positive rates, respectively). In Wenbi Village, dog, bovine and human feces accounted for 44.59%, 39.83% and 14.29% of all fecal samples, and dog, human and bovine feces were found to have schistosome infections (16.95%, 9.52% and 2.33% positive rates, respectively). In 2018, a total of 204 wild feces were collected in both villages, and no schistosome infections were identified. Sheep, dog and bovine feces accounted for 36.27%, 33.33% and 27.45% of all fecal samples in Qiandian Village, and dog, bovine and human feces accounted for 72.55%, 11.76% and 10.78% of all fecal samples in Wenbi Village.A remarkable achievement has been obtained in the control of infectious sources of schistosomiasis in Eryuan County, and the role of human and bovine as the major infectious sources of schistosomiasis has been effectively controlled. In the future, the integrated strategy with emphasis on the control of infectious sources should be intensified, and the management of reservoir hosts including dog and mouse should be strengthened.[

To analyze the dynamic endemic situation of schistosomiasis in Yunnan Province, and evaluate the effectiveness of the prevention and control interventions.Four schistosomiasis heavy endemic villages (each of 4 endemic counties) from 2005 to 2014 and 18 villages (each of 18 counties) in 2015 and 2016 were selected as survey sites. Then, the serological screening and etiological tests were carried out in the residents and floating population. The infection status of the livestock and relevant information of field feces andThe serum positive rate was 8.40% to 25.40% in the local residents, and the rate of the female was higher than that of the male, the rates of 30 to 60 year age groups were higher than those of the other age groups, and the rates of peasants were higher. The feces positive rate was 0 to 6.59%, and the corrected infection rate was 0 to 1.67% in the local residents. The serum positive rate was 0 to 25.00% in the floating population. The infection rate in the livestock was 0 to 10.29%, and the main infected animals were the cattle, buffalo, dog, equine and pig. Totally 1 642 feces were tested, and no positives were found. The area with snail habitats was 753.97 hmThe schistosomiasis epidemic situation has been effectively controlled, and is at a low prevalence status in Yunnan Province. In order to block the transmission of schistosomiasis and eliminate schistosomiasis, the comprehensive control measures should be strengthened continually.[

To master the prevalence status of schistosomiasis in Yunnan Province in 2016, so as to provide the evidence for formulating the control strategy and intervention measures.The schistosomiasis heavy-endemic villages were selected from each of 18 endemic counties as the survey sites. Then, the serological and etiological tests were carried out in the local residents and floating population, and the infection status of the livestock, field feces andThe serum positive rate of schistosomiasis of local residents was 8.78% and the serum positive rate was 2.26% of floating population. No schistosome eggs were found in the stool examinations in the population. The area with snails was 80.054 6 hmThe schistosomiasis epidemic situation is stabilized in Yunnan Province in 2016. However, the area with snails and the number of living snails are increasing, and therefore, the schistosomiasis epidemic risk still exists. So, the comprehensive control measures should be strengthened continuously.