A formula of a compound that shows the relationship of the atoms in a molecule. The atoms are shown joined by valence bonds (e.g., H-O-H) as opposed to the empirical formula (H2O).
Causes. Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis.
The symptoms of pertussis are similar to a common cold: runny nose, sneezing, mild cough, and low-grade fever. [1]. Bordetella pertussis has several virulence factors, one of which is the adenylate cyclase toxin (CyaA). It is the agent that causes whooping cough.he current Bordetella pertussis vaccine is a whole-cell vaccine which means that the vaccine uses whole dead B. pertussis cells. The whole-cell vaccine has been very effective for the majority of the population, but some people develop severe adverse reactions to this vaccine.