Bordetella is a genus of small, Gram-negative coccobacilli of the phylum Proteobacteria. Bordetella species, with the exception of B. petrii, are obligate aerobes, as well as highly fastidious, or difficult to culture. All species can infect humans. The first three species to be described, are sometimes referred to as the classical species. Two of these are also motile.
B. pertussis and occasionally B. parapertussis cause pertussis or whooping cough in humans, and some B. parapertussis strains can colonise sheep. B. bronchiseptica rarely affects healthy people, though disease in immunocompromised patients were reported. B. bronchiseptica causes several diseases in mammals, including laryngotracheitis, and atrophic rhinitis in dogs and pigs, respectively. Other members of the genus cause similar diseases in other mammals and in birds, B. hinzii, B. avium.
The genus is named after Jules bordet.