The introduction of pathogens infecting several hosts is one of the major causes of emerging infectious diseases ( 7). burgdorferi sensu lato to native communities and eventually may increase the risk of Lyme disease transmission to humans. burgdorferi sensu lato, they may spill back B. If chipmunks are competent reservoir hosts for B. burgdorferi sensu lato genospecies than of B. These results may be explained by the higher exposure of chipmunks, because they harbor more ticks, or by their higher tolerance of other B. Furthermore, chipmunks were more infected (35%) than voles (16%). Chipmunks were infected by the three Borrelia genospecies that were present in questing nymphs and that infect rodents ( B. burgdorferi sensu lato with ear biopsy specimens taken from the rodents and in nymphs using PCR and restriction fragment length polymorphism (RFLP). ![]() Our research took place between 20 in a suburban French forest, where we trapped 335 chipmunks and 671 voles and collected 743 nymphs of ticks that were questing for hosts by dragging on the vegetation. burgdorferi sensu lato in chipmunks were similar to those of a native reservoir rodent, the bank vole ( Myodes glareolus). Second, we determined whether the prevalence and diversity of B. burgdorferi sensu lato genospecies associated with rodents and available in their source of infection, questing nymphs. First, we ascertained whether chipmunks were infected by all of the B. ![]() In this study, we investigated whether an introduced species, the Siberian chipmunk ( Tamias sibiricus barberi), was a potentially new reservoir host for Borrelia burgdorferi sensu lato, the causative agent of Lyme disease. Little attention has been given in scientific literature to how introduced species may act as a new host for native infectious agents and modify the epidemiology of a disease.
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