Related Clues:

• W.H.O. concern
• Word after blue or bird
• Bug with its own season?
• When spring ends
• National Iced Tea Month
• H1N1 ailment
• Cold's kin
• Common viral infection
• Cause of chills and fever
• Seasonal illness
• Seasonal malady
• In brief, winter illness
• A bad winter bug
• Influenza, in short
• Winter disease, awfully avian