vagococcus elongatus vagococcus elongatus vagococcus elongatus is a gram-positive bacterium from the genus of vagococcus which has been isolated from a swine manure storage pit from the united states. vagococcus elongatus scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: enterococcaceae genus: vagococcus species: v. elongatus binomial name vagococcus elongatuslawson et al. 2007 type strain ppc9