The doctor (at a walk-in clinic) told me viral respiratory infections can last months and there's nothing you can do. Just wait. HE gave me some pills to stop the cough since it was interfering with my life.
That was it. It was about one year later that the cough finally dissipated. It got better after about 5 months, but it took many more months for all symptoms to go away.
I guess my question is... why did my doctor tell me that viral respiratory diseases can last for many months in early 2019, when according to what I gather here, doctors are surprised that COVID may do the same?