Objective To explore the prevalence and prevention and control effect of Keshan disease (KD) in China and to provide evidences for developing prevention and control strategies and rational allocation of health resources.
Methods We conducted case searching and key endemic area investigation among permanent residents in 280 KD endemic areas in 15 provinces/autonomous regions/municipalities across China during 2015 – 2016. Data on KD surveillance and KD prevention and control performance in the endemic areas were collected.
Results 85.4% of all KD endemic counties were surveyed in the study. Among the 237 000 residents examined, 802 were diagnosed as KD, with a prevalence rate of 14.3/10 000. Of all the KD patients diagnosed, 153 and 649 were chronic and potential cases and the prevalence rates of the two type of KD were 2.7 and 11.6 per 10 000 for the residents surveyed. The analysis results of surveillance data demonstrated that 75.7% of the surveyed KD endemic counties with the indicators reaching the standards for KD elimination and 13.9% with the indicators for KD control; only 10.4% of the counties with the indicators not meeting the required for KD control and those counties were mainly located in Gansu and Shandong province and Inner Mongolia Autonomous Region.
Conclusion The prevalence of Keshan disease was generally under well control during 2015 – 2016 in China but there were still endemic counties with surveillance indicators not reaching national standards for the control of the disease in a few provinces.
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