Epidemiological characteristics,natural host and vectors of tsutsugamushi disease in Ankang City
Objective To analyze the epidemic situation and vector monitoring of tsutsugamushi disease in Ankang City,so as to provide technical support for prevention and control of tsutsugamushi disease.Methods Case information of tsutsugamushi disease was collected and analyzed from China Disease Prevention and Control Information System from 2014 to 2023.According to the high incidence of areas and terrain characteristics,the rodent monitoring and chigger mites were carried out.The data were statistically processed using SPSS 17.0 softwares and analyzed by Chi-square test between groups.The blood and organ mixture of rodents was detected by real-time fluorescence quantitative polymerase chain reaction.Results A total of 342 cases of tsutsugamushi disease were reported in Ankang City from 2014 to 2023,and the number of annual reported cases and regional distribution showed an increasing and spreading trend.The cases in females were higher than that in males.The cases were mainly aged 45-70 years old,mainly employed as farmers.The peak was during April to October.452 small mammals were captured in 2023,with a rodent density of 12.55％,Mus musculus,Rattus norvegicus and Rattus flavipectus were the dominant rodent species.A total of 1 484 chigger mites were collected from 91 mice,the rate of carrying chigger mites in rodents was 20.13％,and the index of chigger mites was 3.28.The higher index of chigger mites were Leptotrombidium gemiticulum,L.deliense and L.scutellare.A total of 452 of rodent blood and organ mixture were tested,and one sample was positive for Orientia tsutsugamushi.Conclusion The Ankang City was a transitional source of tsutsugamushi disease,and the overall cases are on the rise and spreading in recent years.It is necessary to strengthen the training of tsutsugamushi disease diagnosis and treatment,promote health education and publicity,ensure farmers personal protection,and carry out monitoring and detection of rodents and chigger mites,so as to reduce the incident of tsutugamushi disease.
万方数据
维普
