Poh XY, Tan CW, Lee IR, Chavatte JM, et al. Antibody response of heterologous vs homologous mRNA vaccine boosters against the
SARS-CoV-2 Omicron variant: interim results from the PRIBIVAC study, A Randomized
Clinical Trial. Clin Infect Dis 2022 May 11. pii: 6583615. doi: 10.1093.
PMID: 35543372