yersinia aleksiciae yersinia aleksiciae yersinia aleksiciae is a gram-negative bacteria that is commonly isolated from the feces of warm-blooded animals such as humans, reindeers, and pigs. the type strain is y159 (=wa758 =dsm 14987 =lmg 22254). yersinia aleksiciae scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: enterobacterales family: yersiniaceae genus: yersinia species: y. aleksiciae binomial name yersinia aleksiciaesprague and neubauer, 2005 etymology n.l. gen. fem. n. aleksiciae, of aleksic, in honor of professor stojanka aleksic, hamburg, germany for her studies on the epidemiology and microbiology of yersinia.