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Bordetella pertussis is a Gram-negative, aerobic, pathogenic, encapsulated coccobacillus bacterium of the genus Bordetella, and the causative agent of pertussis or whooping cough. Its virulence factors include pertussis toxin , adenylate cyclase toxin , filamentous haemagglutinin , pertactin , fimbria , and tracheal cytotoxin .
Bordetella (/ ˌ b ɔːr d ə ˈ t ɛ l ə /) is a genus of small (0.2 – 0.7 μm), Gram-negative, coccobacilli bacteria of the phylum Pseudomonadota. Bordetella species, with the exception of B. petrii, are obligate aerobes, as well as highly fastidious, or difficult to culture.
Bordetella pertussis is a Gram-negative coccobacillus responsible for causing whooping cough. Yersinia pestis, the bacterium that causes plague, is also coccobacillus. [26] Coxiella burnetti is also a coccobacillus. [27] [28] Bacteria from the genus Brucella are medically important coccobacilli that cause brucellosis.
Bordetella bronchiseptica is a small, gram-negative, rod-shaped bacterium of the genus Bordetella. [1] It can cause infectious bronchitis in dogs and other animals, [ 2 ] but rarely infects humans. [ 3 ]
Adenylate cyclase toxin (CyaA) is released from bacterium Bordetella pertussis by the T1SS (Type 1 secretion system) and released in the host’s respiratory tract in order to suppress its early innate and subsequent adaptive immune defense. [1] CyaA plays a particular role in the early phases of airway colonization.
Pertussis toxin (PT) is a protein-based AB 5-type exotoxin produced by the bacterium Bordetella pertussis, [2] which causes whooping cough. PT is involved in the colonization of the respiratory tract and the establishment of infection. [ 3 ]
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Moreover, the Bordetella pertussis adhesins FHA and pertactin are components of three of the four acellular pertussis vaccines currently licensed for use in the U.S. Additionally, anti-adhesion vaccines are being explored as a solution to urinary tract infection (UTIs).