What are the stages, symptoms, and signs of whooping cough?
The first stage of whooping cough is known as the catarrhal stage. In the catarrhal stage, which typically lasts from one to two weeks, an infected person has symptoms characteristic of an upper respiratory infection, including • runny nose, • sneezing, • low-grade fever, or a • mild, occasional cough, similar to the common cold. The cough gradually becomes more severe, and after one to two weeks, the second stage begins. It is during the second stage (the paroxysmal stage) that the diagnosis of whooping cough usually is suspected. The following characteristics describe the second stage: • Bursts (paroxysms) of coughing, or numerous rapid coughs, are apparently due to difficulty expelling thick mucus from the airways in the lungs. Bursts of coughing increase in frequency during the first one to two weeks, remain constant for two to three weeks, and then gradually begin to decrease in frequency. • At the end of the bursts of rapid coughs, a long inspiratory effort (breathing in) is usua
