The best numbers for this come from Hong Kong, which uses both Sinovac and Biontech/Pfizer.[0]
Three doses of Sinovac are actually marginally more protective for >80-year-olds (97.9% vs 97.5% effectiveness at preventing death), though the difference is probably not statically significant.
Three doses of Sinovac are actually marginally more protective for >80-year-olds (97.9% vs 97.5% effectiveness at preventing death), though the difference is probably not statically significant.
0. Study in The Lancet Infectious Diseases: https://doi.org/10.1016/S1473-3099(22)00345-0