So how do you kick that kind of lingering cough for good? Length of lingering cough mattersThe question of how to combat an irksome cough is an old one. WATCH: Why two friends in Halifax signed up to catch whooping cough: These friends signed up to catch whooping cough and live in isolation Duration 5:04 An exclusive look at a lab where Canadians are getting sick on purpose to help scientists study whooping cough — and one day develop a new vaccine. But in straightforward cases where a previous viral infection has led to a lingering cough, physicians agree they usually resolve on their own. "Most trials found cough symptoms improve without medication, highlighting the self-limiting nature of post-infectious cough."
