How long does it take for a whooping cough to get over?

UH BOY...: There is a reason why they used to call this disease the "100 day cough". In my experience, it takes several weeks(2-4), sometimes longer. This is true despite all we do to try and make your infection go away. I've had patients who have fractured ribs from whooping cough...

Depends: Some cases are effectively treated before they get into the whoop stage, sometimes by accident, and pass quickly(weeks).However, the classical description for whooping cough in adults is "the 100 days cough". Once there is enough injury to the internal airways within the lung you can expect it to take a while to get better.