Sgt. Jonathan Harris, 3rd Battalion, 353rd Infantry Regiment, vaccinates Lance Cpl. Mason Brennan, 1st Battalion, 23rd Marine Regiment at the Soldier Center Medical Home clinic during his annual periodic health assessment at the Joint Readiness Training Center and Fort Polk, La. on July 22.

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Keywords: army, bjach, corps, fort, immunizations, jrtc, marine, medicine, polk