Avg cough = 18d: A recent study concluded that the average duration of a cough illness lasted approximately 18 days. So the bad news is that someone who's been coughing for a week has another 10 days of cough left on average. However, if s/he is feeling short of breath and/or having fevers, sweats & chills, it's best to go see one's family doc. Antibiotics aren't warranted for every (cough) illness.
Answered 9/25/2014
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