Analysis on anti-Echinococcus antibody level in population of high prevalence area in Ningxia, 2008-2011

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Objective To compare the anti-Echinococcus antibody levels in population of high prevalence area in Ningxia Province,and provide a scientific basis to guide the prevention and control work.Methods Using the cluster random sampling method,the permanent residents aged over 3 in six counties such as Xiji County were enrolled for investigation during 2008 to 2011,their serum anti-Echinococcus IgG was determined by ELISA method.Results The positive rate of anti-Echinococcus IgG in population of six counties was declining year by year,the total infection rate fell from 29.1％ in 2008 to 14.1％ in 2011.The positive rate of anti-Echinococcus IgG in rural population in recent 4 years is still higher than that in urban population.The positive rate of anti-Echinococcus IgG in 3-14 years old age group was lowest (10.44％),and that in over-60s group was highest(23.15％).The positive rate of anti-Echinococcus IgG in women was higher than that in men.The positive rate was higher in Hui than that in Han nationality.It was higher in the butchers and the cattle,sheep traffickers than in other occupations.Conclusion The positive rate of antiEchinococcus IgG in six counties of echinococcosis high epidemic area such as Xiji was declining year by year,but still remains at higher levels. Key words: Echinococcosis;  High prevalence area;  Serum antibody;  Analysis;  Ningxia

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