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CH 37 Bordetella
B. pertussis
| the causative agent of pertussis (whopping cough) | Bordetella pertussis |
| virulence factors | pertussis toxin, filamentous haemagglutinin, pertactin, fimbria, and tracheal cytotoxin |
| reservoir | humans |
| transmission | airborne droplets |
| B. pertussis virulence factors | adhesions (hemagglutins), toxicity, overcoming host defenses |
| catarrhal | mild cold symptoms |
| paroxysmal | severe and violent coughing |
| convalescent | lymphocytosis |
| collect specimens with swab | dacron swab with wire handle |
| specimen must be taken from areas with ciliated epithelium | back of nasopharynx |
| Bordet-Gengou | special cultivation media, potato infusion with sheep blood |
| plate incubation | 35 degrees celcius without CO2 |
| colonial appearance | shiny, whitish gray |
| 2 types of acellular vaccines are available | DTaP, Tdap |
| most reliable serology | anti-Pertussis toxin (PT) |