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- Bordetella are small, aerobic Gram-negative coccobacilli.
- Organisms are fastidious, need special media (such as charcoal blood agar with cephalexin, Regan Lowe or Bordet-Gengou media) for isolation.
- B. pertussis: most common etiology of whooping cough and exclusively a human pathogen.
- B. parapertussis: leads to less severe but similar symptoms.
- B. bronchiseptica (agent of kennel cough)
- B. holmesii: rarely have been implicated to cause human respiratory disease. May cause sepsis in immunocompromised patients.
- B. trematum: rarely found in wounds and ear infections.
- B. hinzii: an uncommon cause of sepsis in immunocompromised hosts.
- B. avium: pathogen identified only in birds.