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).
Ornithodoros parkeri: distribution and host data; spontaneous infection with relapsing fever spirochetes.
Isolation and characterization of Borrelia parkeri in Ornithodoros parkeri (Ixodida: Argasidae) collected in Colorado.