Mutating chikungunya virus non‐structural protein produces potent live‐attenuated vaccine candidate by Chan, Y, Teo, T, Utt, A, Tan, JJ, Amrun, SN, Abu Bakar, F, Yee, W, Becht, E, Lee, CY, Lee, B, Rajarethinam, R, Newell, E, Merits, A, Carissimo, G, Lum, F, Ng, LF