legionella cincinnatiensis legionella cincinnatiensis legionella cincinnatiensis is a gram-negative, non-spore-forming, aerobic bacterium from the genus legionella which was isolated in cincinnati from an open lung biopsy specimen from a patient who had hemodialysis because of an end-stage renal disease and suffered from bronchopneumonia. legionella cincinnatiensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: legionellales family: legionellaceae genus: legionella species: l. cincinnatiensis binomial name legionella cincinnatiensisthacker et al. 1989 type strain 72-oh-0, atcc 43753, bcrc 17047, ccrc 17047, ccug 31230 a, cip 103875, dsm 19233, nctc 12438