borrelia parkeri borrelia parkeri borrelia parkeri, a species of borrelia, has been associated with relapsing fever. borrelia parkeri scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: borreliaceae genus: borrelia species: b. parkeri binomial name borrelia parkeri(davis, 1942) steinhaus, 1946