<unk>  is a bacterial genus containing six species. Named in honour of Joseph Lister,<unk>  species are Gram positive bacilli and are typified by L. monocytogenes, the causative agent of<unk> sis.<unk>  ivanovii is a pathogen of ruminants, and can infect mice in the laboratory, although it is only rarely the cause of human disease.
Listeria
Salmonella
Salmonella enterica
Francisella
Streptococcus
Brucella
Bacteroides
Arcobacter