The latest results from the Canadian Blood Services’ monthly serosurvey indicate that 95% of blood donors sampled in July 2021 had antibodies against SARS-CoV-2, acquired predominantly through vaccination. Not only did vaccine-induced seroprevalence increase among all sociodemographic groups and across all geographic regions, but infection-acquired seroprevalence dropped compared to June 2021. Donors identifying as … Continue reading Newest Canadian Blood Services data mirrors widescale vaccine roll-out in Canada