A Randomized Trial Comparing Omicron-Containing Boosters with the Original Covid-19 Vaccine mRNA-1273 https://www.medrxiv.org/content/10.1101/2023.01.24.23284869
A Randomized Trial Comparing Omicron-Containing Boosters with the Original Covid-19 Vaccine mRNA-1273 https://www.medrxiv.org/content/10.1101/2023.01.24.23284869