borrelia kurtenbachii borrelia kurtenbachii borrelia kurtenbachii is a spirochete bacterium; it can be pathogenic, being involved in cases of lyme borreliosis. borrelia kurtenbachii scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: borreliaceae genus: borrelia species: b. kurtenbachii binomial name borrelia kurtenbachiimargos et al. 2011