pasteurella langaa pasteurella langaa pasteurella langaa, is a gram-negative, nonmotile, penicillin-sensitive coccobacillus of the family pasteurellaceae. bacteria from this family cause zoonotic infections in humans. these infections manifest themselves as skin or soft tissue infections after an animal bite. pasteurella langaa scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: pasteurella binomial name pasteurella langaamutters et al. 1985