Researchers have found<unk>  in at least 37 mammalian species, both domesticated and feral, as well as in at least 17 species of birds and possibly in some species of fish and shellfish. Laboratories can isolate<unk>  from soil, silage, and other environmental sources.<unk>  is quite hardy and resists the deleterious effects of freezing, drying, and heat remarkably well for a bacterium that does not form spores. Most<unk>  strains are pathogenic to some degree.
Listeria monocytogenes
Bacillus cereus
Salmonella enterica subsp. enterica
Salmonella
Vibrio vulnificus
Vibrio cholerae
Yersinia pestis
Campylobacter upsaliensis