Heterologous versus homologous COVID-19 booster vaccination in previous recipients of two doses of CoronaVac COVID-19 vaccine in Brazil (RHH-001): a phase 4, non-inferiority, singl... by Costa Clemens, SA, Weckx, L, Clemens, R, Almeida Mendes, AV, Ramos Souza, A, Silveira, MBV, da Guarda, SNF, de Nobrega, MM, de Moraes Pinto, MI, Gonzalez, IGS, Salvador, N, Franco, MM, de Avila Mendonça, RN, Queiroz Oliveira, IS, de Freitas Souza, BS, Fraga, M, Aley, P, Bibi, S, Cantrell, L, Dejnirattisai, W, Liu, X, Mongkolsapaya, J, Supasa, P, Screaton, GR, Lambe, T, Voysey, M, Pollard, AJ