Objectives To understand the risk factors of cystic echinococcosis in Tibetan population,so as to provide the reference for development of prevention and control strategies.Methods Four cystic echinococcosis highly-prevalent townships were selected from Naqu County of Tibet and Shiqu County of Sichuan Province,which had similar environmental and altitude conditions,from August to September,2017.Applying the 1:1 case-control study,a household survey was conducted to investi-gate the risk factors of echinococcosis in humans. Results A total of 378 residents were investigated,of which the numbers of cases and non-cases were both 189.The univariate analysis showed that the years of keeping dogs(OR=1.032,P<0.05),the number of keeping dogs(OR=1.260,P<0.05),the way of raising dogs(OR=1.434,P<0.05),feeding with raw viscera (OR=1.531,P<0.05),and there being stray dogs around(OR=1.946,P<0.05)were the risk factors of echinococcosis.As a result of the multivariate logistic regression analysis,only three risk factors,feeding with raw viscera,there being stray dogs around,and drinking water resource,were included in the regression model.Conclusion Feeding with raw viscera,there be-ing stray dogs around,and drinking water resource are the risk factors of echinococcosis in humans.

Echinococcosis is a serious zoonotic parasitic disease caused by infections with larval Echinococcus. The life cycle of Echinococcus involves a variety of animal hosts, including hoofed animals and rodents as intermediate hosts and carnivores as definitive hosts. The transmission of human echinococcosis is closely associated with the life cycle of E. granulosus and E. multilocularis among animal hosts in nature. This review summarizes the recent advances in the prevalence and influencing factors of E. granulosus and E. multilocularis infections in animal hosts, so as to provide insights into precision control of echinococcosis.

Objective To understand the professional theory, prevention and control practice, experimental diagnosis and other technical skills of parasitic diseases among technicians of all levels of disease control and prevention institutions, so as to provide the evidence for strengthening the capacity building of Chinese professional personnel. Methods According to the method of recommendation at all levels, the subjects from disease control and prevention institutions at province, prefecture or county levels were chosen to assess the theory of parasitic diseases and test operation skills by using the method of answering the questions together with on-site operations in China. A database was built consisting of subjects’ basic information and assessment scores. By using the method of hierarchical classification, the scores by gender, age, professional title, institutions and places of participants were analyzed. Results A total of 124 professions in prevention and treatment of parasitic diseases in 31 provinces (cities and regions) were evaluated in China. The average total score of all the subjects was 125.0 ± 35.2, with a passing rate of 54.8%. The average scores of male subjects and female subjects were 120.8 ± 34.2 and 126.6 ± 35.4 respectively; the average scores of the subjects aged under 30 years, between 30 and 40 years, and above 40 years were 125.6 ± 33.6, 124.9 ± 35.8, and 119.3 ± 45.9 respectively; the average scores of persons with junior, intermediate and senior professional titles were 119.8 ± 35.8, 136.0 ± 32.5 and 127.1 ± 40.9 respectively. The average theoretical assessment score of all the subjects was 67.4 ± 15.6, with a passing rate of 68.5%. The average practical skill assessment score of all the subjects was 57.6 ± 21.8, with a passing rate of 46.0%. The average detection rates of Plasmodium falciparum, P. vivax, P. ovale and P. malariae in endemic and non-endemic areas were 64.1%, 72.8%, 57.0%, 58.3% and 35.9%, 46.9%, 33.3%, 43.8%, respectively. The detection ability of professionals in endemic areas was significantly higher than that in non-endemic areas (χ² = 767.10, 462.12, 134.97 and 360.80, respectively, all P < 0.01). The total detection rate of schistosome eggs was 48.7%, and the detection rates of schistosome eggs were 67.4% and 36.8% in endemic and non-endemic areas, respectively. The detection ability of professionals in endemic areas was significantly higher than that in non-endemic areas (χ² = 817.74, P < 0.01). The detection rates of Ascaris lumbricoides, Trichuris trichiura, and Enterobius vermicularis were 85.7%, 78.6%, 91.7%, and 61.8%, 23.5% and 74.4% in the technicians in southern region and northern region of China, showing significant differences (χ² = 622.58, 301.70 and 588.71, respectively, all P < 0.01). Conclusions The overall results of the subjects are good, but the technical operation capability of them is relatively low. Therefore, the specific training based on daily work needs should be enhanced. In addition, we should attach importance to talent cultivation and technical reserve, and strengthen the construction of the team, so as to meet the needs of the prevention and control of parasitic diseases.