Objective To analyze the epidemic trend of natural focal diseases in China from 2011 to 2020,and to provide a scientific basis for the prevention and control of natural focal diseases in military training.Methods A Joinpoint regression model was used to fit the annual incidence data of natural focal diseases in China from 2011 to 2020,to analyze the incidence trend of natural focal diseases in China from 2011 to 2020,and to calculate the annual percent change(APC)and its 95%CI.Results Of the 15 notifiable legally natural focal diseases reported in China from 2011 to 2020,the top three incidence rates were brucellosis,epidemic hemorrhagic fever,and dengue fever,and the top three fatality rates were rabies,human infection with the highly pathogenic avian influenza and plague,respectively.From 2011 to 2020,the incidence rates of plague and human infection with the highly pathogenic avian influenza increased year by year(tplague=2.4,P<0.05;thuman infection with the highly pathogenic avian influenza=14.3,P<0.05)in China,while the incidence rates of rabies,leptospirosis and malaria decreased year by year(trabies=-30.7,P<0.05;tleptospirosis=-2.9,P<0.05;tmalaria=-2.9,P<0.05).The incidence rate of schistosomiasis increased year by year before 2015,and then decreased(t201 1-2015=9.9,P<0.05;t201 5-2020=-9.8,P<0.05).Before 2017,the incidence rate of typhus decreased year by year(t2011-2017=-10.1,P<0.05),while the incidence of hydatidosis increased year by year(t2011-2017=3.5,P<0.05).Conclusion The incidence situation of natural focal diseases in China from 2011 to 2020 remains serious,which suggests that the focus groups,especially army officers and soldiers,should be required to take targeted prevention and control measures when they entered natural focus.
Natural focal diseaseEpidemiologyJoinpoint regressionIncidence rateRegression analysisPrevention and control