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Mostly sunny and warmer
Periods of sun; breezy, mild
of sunlight, then sets at
of moolight, then sets at
Warmer air will move into Washington, D.C., starting later this week. more >
Dec 16, 2013; 5:00 AM ET
Symptoms caused by the common cold can often resemble those associated with the influenza virus. So how do you differentiate between the two?