borrelia garinii borrelia garinii borrelia garinii is a spirochete bacterium in the genus borrelia. borrelia garinii scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: borreliaceae genus: borrelia species: b. garinii binomial name borrelia gariniibaranton et al. 1992