Yang T, Tong F, Tang L, Li P, et al. Repeated vaccination does not appear to significantly weaken the protective
effect of influenza vaccine in the elderly: A test-negative case-control study in
China. Vaccine 2024 May 17:S0264-410X(24)00593-0. doi: 10.1016/j.vaccine.2024.
PMID: 38762359
![]() |
![]() |
![]() |