New Results mRNA-1273 or mRNA-Omicron boost in vaccinated macaques elicits comparable B cell expansion, neutralizing antibodies and protection against Omicron Matthew Gagne, Juan I. Moliva, Kathryn E. Foulds, Shayne F. Andrew, Barbara J. Flynn, Anne P. Werner, Danielle A. Wagner, I-Ting Teng, Bob C. Lin, Christopher Moore, Nazaire Jean-Baptiste, Robin Carroll, Stephanie L. Foster, Mit Patel, Madis