1. A live attenuated alphavirus virus composition comprising:one or more live, attenuated alphaviruses selected from the group consisting of chikungunya (CHIK) virus, o'nyong'nyong virus, Eastern equine encephalitis, Western equine encephalitis, and Venezuelan equine encephalitis;
10.0 to 20.0 mM HEPES buffer;
one or more carbohydrate agents having a concentration from 1.0% to 15% (w/v) selected from the group consisting of: trehalose, sucrose, mannitol, sorbitol, and galactose; and
0.1% to 1.0% (w/v) gelatin,wherein the composition stabilizes live attenuated alphavirus compositions.