cupriavidus gilardii cupriavidus gilardii cupriavidus gilardii is a gram-negative, aerobic, motile, oxidase-positive bacterium from the genus cupriavidus and the family burkholderiaceae. it is motil by a single polar flagellum. it is named after g. l. gilardi, an american microbiologist. the organism was initially identified as ralstonia gilardii in 1999, renamed wautersiella gilardii, and most recently moved into the genus cupriavidus after 16s rrna gene sequencing revealed it to be most closely related to cupriavidus necator. notably, species of this genus are not inhibited by copper due to the production of chelation factors, and may actually be stimulated by the presence of copper. cupriavidus gilardii scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: burkholderiaceae genus: cupriavidus species: c. gilardii binomial name cupriavidus gilardiivandamme and coenye 2004 type strain api 121-2-84, api 141-2-84, atcc 700815, bcrc 17471, ccm 4866, ccrc 17471, ccug 38401, cfbp 6736, cip 105966, dsm 17292, gilardi 4325, jcm 11283, lmg 5886 synonyms wautersia gilardii ralstonia gilardii clinical significance cupriavidus gilardii may be resistant to multiple antibiotic agents; carbapenem-resistant c. gilardii has been found in stool surveillance cultures and has been associated with fatal human infection.