Incubation periods generally occur between 7 and 10 days but can span 4 to 21 days but on rare occasions may incubate as long as 42 days. Pertussis is branched into 3 stages. The first stage is catarrhal which has the symptoms of the common cold, coryza inflames the mucous membrane in the nose, sneezing, mild cough and a low grade fever occur. After about 1-2 weeks the second stage Paroxysmal begins this is characterized by the violent coughs due to the inability to discharge the thick mucus from the tracheobronchial tree due to the toxins that paralyzed the cilia that