Prevalence of antibodies to Borrelia burgdorferi,
Borrelia parkeri and Borrelia turicatae in human settlements of the Cordillera Province, Bolivia.
Ornithodoros parkeri, another tick vector of relapsing fever spirochetes in western United States, was collected during 1936 in Beaverhead County in Southwestern Montana, and an undisclosed number of these ticks transmitted
Borrelia parkeri to one mouse in the laboratory (9).