SARS-CoV-2 antibody levels increased in Canadian healthcare workers with each vaccine dose, but this waned over time

A CITF-funded study among Canadian healthcare workers, published in preprint and not yet peer-reviewed, found that SARS-CoV-2 anti-receptor binding domain (RBD) IgG levels increased following each COVID-19 vaccine dose and after the first SARS-CoV-2 infection.