Answer:
paroxysmal
Explanation:
Pertussis is highly contagious and acute respiratory disease which is caused by bacteria Bordetella pertussis.
The disease has 3 types of stages which are catarrhal stage, paroxysmal stage, and convalescent stage.
The paroxysmal stage of the Pertussis is characterized by the episodes of the coughing with a distinctive sound which is known as whopping during the process of inspiration.
This type of cough gives disease the common name which is called Whooping Cough.
