“…Most of these species are responsible for respiratory infections. B. pertussis, a strictly human pathogen, and B. parapertussis, a pathogen in both humans and sheep, are agents of whooping cough[1], B. bronchiseptica is a respiratory pathogen in many animal species, including dogs, pigs, rabbits and cats, but may also cause pneumonia and bacteremia in humans[2–3], B. avium causes respiratory infections in poultry but has rarely been reported to cause infections in humans[4], and B. hinzii is a respiratory disease agent in poultry; only three cases of human infections with this bacterium have been described[5–7]. The other two species, B. holmesii and B. trematum , are not primarily associated with respiratory infections.…”