Surveillance of Keshan disease at township level in Inner Mongolia Autonomous Region in 2019 / 中华地方病学杂志

ABSTRACT

Objective:To learn about the condition of Keshan disease at township level in Inner Mongolia Autonomous Region (Inner Mongolia for short).Methods:In accordance with the "Three-Year Tackling Implementation Plan for Keshan Disease in Inner Mongolia", Keshan disease surveillance was carried out from March to December 2019 in the disease affected townships of all 12 diseased banners (counties, cities, disctricts, referred to as banners) in Hulunbuir City, Xing'an League, Chifeng City, and Xilin Gol League in Inner Mongolia, and all permanent residents who lived for more than 6 months were selected as the survey subjects. At the same time, the search for Keshan disease cases was carried out in the relevant medical institutions of the 4 leagues (cities) from 2014 to 2018. The "Diagnosis of Keshan Disease" (WS/T 210-2011) and the "Evaluation Methods for Control and Elimination of Key Endemic Diseases" (2019 edition) were used for diagnosis and elimination evaluation of Keshan disease.Results:There were 75 diseased townships under the jurisdiction of the 12 diseased banners in the 4 leagues (cities) in Inner Mongolia, with a permanent resident population of 1 246 900. A total of 356 150 subjects were examined by electrocardiogram, and 86 507 cases were found to be abnormal, with an abnormal rate of 24.29%. A total of 250 patients with chronic Keshan disease were diagnosed by echocardiography or anteroposterior chest X-ray examination, and the prevalence rate was 2.00/10 000; a total of 287 patients with latent Keshan disease were diagnosed, and the prevalence rate was 2.30/10 000; no patients with acute, subacute or new Keshan disease. After case search, 494 suspected Keshan disease cases were screened out, and 6 cases were finally diagnosed as chronic Keshan disease. From 2014 to 2018, there were no new cases of acute or subacute Keshan disease for five consecutive years, and the prevalence rates of chronic Keshan disease and latent Keshan disease were both lower than 5/10 000 in 2019, meeting the national elimination standard for Keshan disease.Conclusion:In 2019, Inner Mongolia has reached the national elimination standard for Keshan disease, but there are still patients with Keshan disease, so it is necessary to continue to strengthen the monitoring of Keshan disease.