Croup epidemiology and demographics
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Croup is most often caused by parainfluenza virus, primarily types 1 and 3, but other viral and possiblybacterial infections can also cause it. It is most common in the fall and winter but can occur year-round, with a slight predilection for males.
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