Thank your for the question. First you need to make sure that it is really whooping cough. It is caused by the bacteria called Pertussis. The exact diagnosis is made by blood tests, throat swab and chest X ray to rule out other conditions. The treatment is antibiotics for the complete period. Some may need hospitalization and intravenous antibiotics too if the condition is severe and not able to eat. Hope this solves your problem. Thank you!