a large group of bacteria having rigid cell walls; motile types have flagella

an aerobic Gram-negative coccobacillus that causes brucellosis; can be used as a bioweapon

a fastidious gram-negative coccobacillus bacteria, which that causes the sexually transmitted disease chancroid, a major cause of genital ulceration in developing countries characterized by painful sores on the genitalia.

a common Gram-negative bacterium that can cause disease in plants and animals, including humans.

a gram-negative bipolar aerobic bacterium, a Burkholderia-genus human and animal pathogen causing Glanders; the Latin name of this disease (malleus) gave name to the causative agent species.

a Gram-negative, aerobic, pathogenic, encapsulated coccobacillus of the genus Bordetella, and the causative agent of pertussis or whooping cough.