Antibody Responses and Infection Prevention following the Sixth Vaccination using the BA.1 bivalent COVID-19 vaccine among Healthcare workers during the XBB variant Dominance in Japan.
The effect of antibodies elicited by bivalent mRNA vaccines (original and omicron BA.1) on preventing coronavirus disease 2019 (COVID-19) onset in the presence of the XBB variant remains unknown. A prospective cohort study conducted at Chiba University Hospital examined healthcare workers who received their sixth vacci...