candidatus bartonella merieuxii candidatus bartonella merieuxii "candidatus bartonella merieuxii" is a candidatus bacteria from the genus of bartonella candidatus bartonella merieuxii is named after charles mérieux. "candidatus bartonella merieuxii" scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: bartonellaceae genus: bartonella species: "candidatus b. merieuxii" binomial name "candidatus bartonella merieuxii"chomel et al. 2012