legionella israelensis legionella israelensis legionella israelensis is a gram-negative, oxidase-negative, catalase-positive, motile bacterium from the genus legionella which was isolated from water from an oxidation pond in ga'ash in israel. legionella israelensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: legionellales family: legionellaceae genus: legionella species: l. israelensis binomial name legionella israelensisbercovier et al. 1986 type strain atcc 43119, brenner bercovier4, ccug 31115, cip 103879, dsm 19235, gifu 11367, jcm 7560, kctc 12008, nctc 12010