bartonella capreoli bartonella capreoli bartonella capreoli is a pathogenic bacteria first isolated from european ruminants. it is small, fastidious, aerobic, oxidase-negative, gram-negative and rod-shaped. its type strain is ibs 193t (= cip 106691t = ccug 43827t). bartonella capreoli scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: bartonellaceae genus: bartonella species: b. capreoli binomial name bartonella capreolibermond et al. 2002