TABLE 2.

Diversity of bacteria shown to exhibit MVT response

Species	Bacterial phyluma	Physiological characteristic(s)
Acinetobacter baumannii	Proteobacteria	Gram-negative aerobe
Aeromonas hydrophila	Proteobacteria	Gram-negative facultative anaerobe
Burkholderia cepacia	Proteobacteria	Gram-negative anaerobe
Chlamydia pneumoniae	Chlamydiae	Obligate intracellular organismb
Escherichia coli	Proteobacteria	Gram-negative facultative anaerobe
Filifactor alocis	Firmicutes	Fastidious Gram-positive anaerobe
Haemophilus influenzae	Proteobacteria	Gram-negative facultative anaerobe
Listeria monocytogenes	Firmicutes	Gram-positive facultative anaerobe
Mycobacterium avium	Actinobacteria	Slow-growing mycobacterium
Mycobacterium tuberculosis	Actinobacteria	Slow-growing mycobacterium
Porphyromonas gingivalis	Bacteriodetes	Gram-negative anaerobe
Pseudomonas aeruginosa	Proteobacteria	Gram-negative facultative anaerobe
Salmonella enterica	Proteobacteria	Gram-negative facultative anaerobe
Serratia marcescens	Proteobacteria	Gram-negative facultative anaerobe
Staphylococcus aureus	Firmicutes	Gram-positive facultative anaerobe
Stenotrophomonas maltophilia	Proteobacteria	Gram-negative aerobe

^arRNA gene-based classification (4, 65).

^bNutrient stimulation by infection of fresh host cells.