yersinia intermedia yersinia intermedia yersinia intermedia is a gram-negative species of bacteria which uses rhamnose, melibiose, and raffinose. its type strain is strain 3953 (=cip 80-28 =atcc 29909 =bottone 48 =chester 48). it has been found in fish, and contains several biotypes. it is not considered of clinical relevance, being isolated from humans in a routine manner. yersinia intermedia scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: enterobacterales family: yersiniaceae genus: yersinia species: y. intermedia binomial name yersinia intermediabrenner et al., 1980