Epidemiological and etiological characteristics of hand-foot-mouth disease in Tianfu New Area of Sichuan Province from 2019 to 2023
Objective To understand the epidemic rules and etiology characteristics of hand-foot-mouth disease(HFMD)in Tianfu New Area,Sichuan Province,and to provide scientific basis for better preventing and controlling the occurrence and development of HFMD.Methods The case data of HFMD in Tianfu New Area,Sichuan Province from 2019 to 2023 were collected,and statistical analysis was conducted by descriptive epidemiological methods with SPSS 22.0.The test level wasα=0.05.Results From 2019 to 2023,a total of 7 485 clinical and confirmed HFMD cases were reported in Tianfu New Area of Sichuan Province,with an average annual incidence rate of 192.31/105.There was a significant difference in the incidence rate among different years(x2=582.121,P<0.001).There were 1 to 2 epidemic peaks every year,mainly concentrated in May-July and October-December.The male-to-female sex ratio was 1.30∶1,and the difference was statistically significant(x2=74.695,P<0.001).The majority of cases were children aged 0-5 years,accounting for 91.76%of the total number of cases.The occupations were mainly scattered children and nursery children,and there were 4 301(57.46%)scattered children and 2 703(36.11%)nursery children.The top three streets in terms of average annual incidence rate were Wan'an(342.45/105),Huayang(308.32/105)and Zhengxing(138.24/105).There were significant differences in the incidence rate among different streets(x2=1 920.934,P<0.001).The etiological results showed that,other enteroviruses(87.66%)were predominant,and CVA16 and EV 71 accounted for 10.71%and 1.62%,respectively.Conclusions According to the onset time,population and regional characteristics,as well as etiological characteristics of HFMD in Tianfu New Area,health education should be strengthened among scattered and childcare children's guardians in the peak period of incidence,prevention and control in densely populated communities and childcare institutions should be strengthened,and other dominant strains of enteroviruses should be further classified to clarify the pathogen spectrum and reduce the incidence of HFMD.