Winter illness (3)

I believe the answer is:

flu

'winter illness' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for flu that I've seen before include "Common infection" , "A bad winter bug" , "Infection reduced" , "Highly contagious viral disease" , "Winter ailment" .)

I've seen this clue in the King Feature Syndicate, The Sun, the Penny Press, the USA Today, the Universal, the Family Time, The Star Tribune and the L.A. Times Daily.

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