Have a cough that won't go away? This could be why

Amid a tough respiratory virus season, many Canadians have developed a lingering cough that they can't seem to shake. One infectious disease specialists explains what's behind the post-viral symptom.

Have a cough that won't go away? This could be why
Amid a tough respiratory virus season, many Canadians have developed a lingering cough that they can't seem to shake. One infectious disease specialists explains what's behind the post-viral symptom.