Bordetella is a genus of
proteobacteria. The genus Bordetella contains species of related bacteria
with similar morphology, size and staining reactions. To date there are 9
species known of Bordetella: B. pertussis, B. parapertussis, B.
bronchiseptica, B. avium (formerly designated Alcaligenes faecalis),
B. hinzii (formerly designated A. faecalis type II), B.
holmesii, B. trematum, B. petrii and B. ansorpii.
Members of the species B. pertussis and occasionally B. parapertussis
whooping cough in humans. Several other species cause similar disease in
other mammals, such as
B. bronchiseptica, and in birds, such as B. avium and B.