Analysis of monitoring results of Kashin-Beck disease in children in Shaanxi Province from 2008 to 2019 / 中华地方病学杂志

ABSTRACT

Objective:To master the changes of Kashin-Beck disease (KBD) in Shaanxi Province, and provide scientific basis for formulating the prevention and control strategy of KBD and adjusting the prevention and treatment priorities of KBD.Methods:In 2008, 15 administrative villages in 12 townships (towns), 6 ward counties (districts) of 4 cities of Shaanxi Province were selected as survey points; from 2009 to 2011, according to the sampling requirements of the national Kashin-Beck disease surveillance plan, 7 ward counties were selected each year, and 4 townships from each county and 1 village from each township were selected as survey points; from 2012 to 2015, 31 ward counties were selected each year, with 5 townships from each county and 3 villages from each township as survey points; from 2016 to 2018, 43, 12 and 12 ward counties were selected each year, and 5 townships from each county and 3 villages from each township were selected as survey points; in 2019, all ward villages of 62 ward counties were selected as survey points. Children aged 7 to 12 years old (7 to 16 years old in 2009 - 2011 for clinical examination) were selected for X-ray and clinical examination of KBD. The clinical positive detection rate of KBD, the positive detection rate of X-ray and the positive detection rate of metaphysis were calculated, and the disease condition in KBD areas was determined.Results:From 2009 to 2011, a total of 7 628 children aged 7 to 16 years old were clinically examined, and a total of 323 356 children aged 7 to 12 years old were examined in 2008 and 2012 - 2019. No clinically positive cases of KBD were detected. From 2008 to 2018, a total of 114 199 children aged 7 to 12 years old were examined for KBD. A total of 48 cases were positive on X-ray, with a detection rate of 0.04% (48/114 199), of which 47 cases were positive on metaphysis, the detection rate was 0.04% (47/114 199). The positive X-ray detection rate in each year was lower than 3.0%, and the positive X-ray detection rate and the positive metaphysis detection rate of KBD in children in the whole province had been kept below 0.10% since 2011, which was in a low fluctuation. From 2012 to 2016, and 2018, 2019, all of the ward villages monitored in the KBD areas had reached the standard of elimination of KBD. In 2017, 99.49% (194/195) of KBD areas reached the standard of elimination of KBD.Conclusion:From 2008 to 2019, the incidence of KBD in Shaanxi Province continues to decline, the incidence of KBD in ward villages has reached the elimination level and it is in the state of continuous elimination.