关键词: 鼠形动物, 体外寄生虫, 自然疫源性疾病

Abstract: Objective To investigate the background on population and growth-decline of murine animals and their ecto parasites in Maoming port,and forecast the epidemic risk of related disease of natural infectious focus.Methods The common method of vector biological survey and the serological dectetion method were used.Results There were 7 species of murine animal(4 genera,2 families and 2 orders),1 species of flea,6 species of Gamasid mite(5 genera and 2 families),12 species of chigger(5 genera and 2 family) and 1 species of ixodid.The annual infection rate of animals with flea,Gamasid mite,chigger and ixodid was respectively 8.8%,39.2%,31.1% and 4.0%.R.norvegicus,R.losea,R.hainanicus and R.losea are among the animals of top infection rate.The annual infection index of animals infected with flea,Gamasid mite,chigger and ixodid was respectively 0.2,3.5,36.3 and 0.1.The animals with high parasites infection index were R.norvegicus,R.flavipectus,R.losea,R.hainanicus and Bandicota.Serological exams show that 22 cases of endmic typhus with 10.00% infection rate,16 cases of scrub typhus with 7.27% infection rate,7 cases of epidemic hemorrhagic fever with 3.18% infection rate and 1 case of leptospirosis with 0.45% infection rate have been found.Conclusion There exists the epidemic risk of scrub typhus and epidemic hemorrhagic fever in Maoming port area.