<unk>  is a Gram-positive commensal bacterium inhabiting the gastrointestinal tracts of humans and other mammals. Like other species in the genus<unk> ,<unk>  can cause life-threatening infections in humans, especially in the nosocomial (hospital) environment: the naturally high levels of antibiotic resistance found in<unk>  contribute to its pathogenicity.
Enterococcus faecalis
Enterococcus faecium
Streptococcus anginosus
Bacillus cereus
Staphylococcus saprophyticus
Methicillin-resistant staphylococcus aureus
Pseudomonas aeruginosa
Streptococcus viridans