Epidemiological characteristics of natural focal diseases and insect-borne infectious diseases in Tongzhou District of Beijing from 2011 to 2021
Objective To analyze the epidemic characteristics of natural focal diseases and insect-borne infectious diseases in Tongzhou District of Beijing,provide a basis for formulating prevention and control measures.Methods The descriptive epidemiological method was used to statistically analyze the surveillance data of natural focal diseases and insect-borne infectious diseases from 2011 to 2021.Results There was no class A infectious disease of pestis case reported in Tongzhou District of Beijing,a total of 218 cases of seven kinds of class B natural focal diseases and insect-borne infectious diseases,and the annual average incidence rate was 1.40/100 000.There were 10 deaths,the fatality rate was 4.59%,and the annual average mortality was 0.06/100 000,10 dead cases were all rabies.The incidence showed an upward trend from 2011 to 2017(x2trend=35.44,P<0.05),and a downward trend from 2018 to 2021(x2trend=17.86,P<0.05).The seven types of diseases,in descending order of incidence,were as follows:brucellosis,malaria,rabies,hemorrhagic fever,dengue fever,encephalitis B,and schistosomiasis.The cases had been reported in 21 townships or districts,mainly in rural areas.The incidence peak appeared March to September every year,accounting for 73.39%.The incidence rate of males was significantly higher than that of females(x2=90.66,P<0.05).The cases were mainly in the age group of 40-<70 years old,accounting for 71.56%.The farmers had the largest number of cases,accounting for 40.83%.A total of four cases of three kinds of class C natural focal diseases and insect-borne infectious diseases were reported,and the average incidence rate was 0.10/100 000.Conclusions The incidence of natural focal diseases and insect-borne infectious diseases in Tongzhou District of Beijing increased first and then decreased from 2011 to 2021,and the main diseases are local brucellosis and imported malaria.It is necessary to strengthen joint prevention and control,health education,vaccination and other work to effectively control the spread of the epidemic.