Fabiani M, Mateo-Urdiales A, Sacco C, Fotakis EA, et al. Effectiveness against severe COVID-19 of a seasonal booster dose of bivalent (original/Omicron BA.4-5) mRNA vaccines in persons aged >/=60 years: Estimates over calendar time and by time since administration during prevalent circulation of different O Vaccine 2024 Jun 3:S0264-410X(24)00653-4. doi: 10.1016/j.vaccine.2024.
PMID: 38834428