We investigated whether host-seeking nymphs and adults of the western blacklegged tick, Ixodes pacificus Cooley & Kohls, the primary vector of Lyme disease spirochetes in far-western North America, are infected naturally with relapsing-fever group spirochetes in Mendocino County, California. Relapsing-fever group borreliae were detected in four (1.7%) of 234 nymphal and two (0.7%) of 282 adult host-seeking Z. pacificus ticks by polymerase chain reaction and sequence analysis of the 16S rRNA and flagellin genes, respectively, exhibiting 99 and 98.5% sequence homology to Borrelia miyamotoi Fukunaga. Phylogenetic analysis based on these two genes revealed that the borreliae detected in these ticks belong to the relapsing-fever group and that these are closely related to, if not identical with, B. miyamotoi. © 2006 Entomological Society of America.
CITATION STYLE
Mun, J., Eisen, R. J., Eisen, L., & Lane, R. S. (2006). Detection of a Borrelia miyamotoi sensu lato relapsing-fever group spirochete from Ixodes pacificus in California. Journal of Medical Entomology, 43(1), 120–123. https://doi.org/10.1093/jmedent/43.1.120
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