Emergence of double- and triple-gene reassortant G1P[8] rotaviruses possessing a DS-1-Like backbone after rotavirus vaccine introduction in Malawi by Jere, KC, Chaguza, C, Bar-Zeev, N, Lowe, J, Peno, C, Kumwenda, B, Nakagomi, O, Tate, JE, Parashar, UD, Heyderman, RS, French, N, Cunliffe, NA, Iturriza-Gomara, M