Publications

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genetic structure of the tick ornithodoros coriaceus (acari: argasidae) in california, nevada, and oregon.the argasid tick ornithodoros coriaceus (koch) is the only confirmed vector of epizootic bovine abortion (eba) in the united states. the disease and its tick vector have historically been reported in the foothills of the sierra nevada mountains and coast ranges of california. in the past two decades, the range of eba has apparently expanded into southern oregon and northern nevada. possible explanations for this expansion include 1) increased recognition and reporting of eba in these regions; 2) ...200515962771
co-infection of ornithodoros coriaceus with the relapsing fever spirochete, borrelia coriaceae, and the agent of epizootic bovine abortion.the soft tick, ornithodoros coriaceus (koch) (acari: argasidae), is a common mammalian parasite of livestock in many arid regions of the western u.s.a. the tick is a known vector of the undescribed bacterial pathogen that causes epizootic bovine abortion (eba), which results in late-term abortions in beef cattle and subsequent economic loss, which can be considerable, to producers. a second reported bacterial pathogen, borrelia coriaceae, a member of the relapsing fever complex, has also been id ...201121410735
detection of relapsing fever spirochetes (borrelia hermsii and borrelia coriaceae) in free-ranging mule deer (odocoileus hemionus) from nevada, united states.abstract surveillance of mule deer (odocoileus hemionus, rafinesque, 1917) populations for tick-borne diseases has helped define the distribution of these pathogens and their subsequent risk of transmission to humans and domestic animals. we surveyed three mule deer herds across the state of nevada for infection with relapsing fever borrelia spp. spirochetes. bacterial prevalence varied by the county where deer were sampled but borrelia spirochetes were detected in 7.7% of all deer sampled. in ...201121995265
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