I had the cough for about 4 weeks, almost canceled vacation; just couldn’t imagine a long flight with that cough. However it almost cleared up and I decided to go anyway, 1st dive it came back and I was stuck for the remainder of the 3week trip with at least two cough attacks a day. Took a Z pak and extended it out to 12 days(sold over the counter there)still had a twice of day spell.Got over it a couple of days after getting home(dryer climate) but still do not feel like the respiratory system is at 80%, Avoid anyone sick like they have the plague.
Known one fellow who died from it about 2 months ago. Nearly 80% of everybody has had the cough. No gastrointestinal symptoms, just head cold and respiratory infections. Seems if one is sleeping in the wrong position, it can lead to pneumonia.