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Objective:To investigate the precise species of tick vector and the Borrelia spirochete pathogen at the Heilongjiang Province international border with Russia.Methods:In dus study,ticks were collected from 12 Heilongjiang border crossings(including grasslands,shrublands,forests,and plantantions) to determine the rate and species type of spirochete-infected ticks and the most prevalent spirochete genotypes.Results:The ticks represented three genera and four species of the Ixodidae family[Ixodes persidcatus,Dermacentor silvarum,Haemapkysalis concinna and Haemaphysalis japonica].Ixodes persulcatus had the highest amount of Borrelia burgdorferi sensu lata infection of 25.6%and the most common species of Borrelia isolated from Ixodes persulcatus mas Borrelia garinii,strain PD91.Conclusions:Our results suggest that Borrelia garinii PD91- infected Ixodes persulcatus may be the principal cause of Lyme disease in the border crossing areas of Heilongjiang Province.
Objective: To investigate the precise species of tick vector and the Borrelia spirochete pathogen at the Heilongjiang Province international border with Russia. Methods: In dus study, ticks were collected from 12 Heilongjiang border crossings (including grasslands, shrublands, forests, and plantantions) to determine the rate and species type of spirochete-infected ticks and the most prevalent spirochete genotypes.Results: The ticks represented three genera and four species of the Ixodidae family [Ixodes persidcatus, Dermacentor silvarum, Haemapkysalis concinna and Haemaphysalis japonica] .Ixodes persulcatus had the the highest amount of Borrelia burgdorferi sensu lata infection of 25.6% and the most common species of Borrelia isolated from Ixodes persulcatus mas Borrelia garinii, strain PD91. Conclusions: Our results suggest that Borrelia garinii PD91-infected Ixodes persulcatus may be the principal cause of Lyme disease in the border crossing areas of Heilongjiang Province.