I picked up a cold bug during the holidays when I went to a major urban area and spent time with children. All I had was a really loud, persistent wheezing dry cough with no elevated temperature and no runny nose, nasal congestion or sneezing. A couple weeks ago, I checked it out with my new doctor, and he said it was a cold rather than a flu, though I suspect it could be bronchitis which I’ve had before.
At his recommendation, I just got a flu shot for the first time in years, and I subsequently feel like a million bucks for the first time since I picked up this bug. Moreover, I’ve abruptly stopped coughing which I had been doing at least several times a minute until the flu shot. Why would my cold go into remission after I get a flu shot? Are there flu bugs that don’t involve elevated temperature?