EEF1A2 and gastroenteritis: Among them, a type III secretion system has been demonstrated to be involved in colonization (Chaand et al. 2015), a heat-stable enterotoxin (ST), encoded by the stn gene, was reported to contribute to the pathogenicity of these strains in case of gastroenteritis (Morris et al. 1990), a haemagglutinin protease (HA/P), and a haemolysin, present in V. cholerae O1, was suggested to be involved in the enteroinvasiveness of some NOVC isolates (Namdari et al. 2000; Luo et al. 2013; Ottaviani et al. 2009; Awasthi et al. 2013; Schirmeister et al. 2014).