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Gen. Robin Rand, 12th Air Force (Air Forces Southern) commander receives his annual flu vaccination from Tech. Sgt. Abraham Rodriguez, 12th AF (AFSOUTH) Surgeon General office, at Davis-Monthan Air Force Base, Ariz., Nov. 1. The flu season runs from November to April, with most cases occurring between late December and early March. The best way to prevent seasonal flu is to get a flu vaccination. (USAF photo by Capt. Justin Brockhoff/Released).