evidence: Internationally, blood supplier regulators have chosen to apply varying lengths of temporary deferral from blood donation after receiving particular vaccines, including COVID-19 vaccines. Like Health Canada, other national regulators, such as the U.S. FDA, do not require a deferral from blood donation after receipt of a nonreplicating, inactivated, or mRNA-based COVID-19 vaccine. Accordingly, the American Red Cross does not defer donors who indicate that they had received a non-live COVID-19 vaccine. The American Red Cross does have a deferral period of two weeks if donors cannot recall which vaccine they received. [...] Blood donated by individuals who have received a COVID-19 vaccine is not associated with a risk for COVID-19 infection and the SARS-CoV-2 virus is not transmissible by blood. There are no known or suspected harmful effects of blood from a vaccinated individual to a recipient. [...] There are unverified claims that Health Canada-approved COVID-19 vaccines, or the spike proteins produced by the body in response to these vaccines, could be harmful to recipients of blood collected from vaccinated donors. These claims are unproven and not substantiated by the safety studies required for regulatory approval of these vaccines, or from ongoing Canadian and international vaccine and blood safety monitoring. There is no evidence to suggest that blood from a healthy donor vaccinated at any previous time with a Health Canada-approved COVID-19 vaccine poses any health risk to any recipient of any age.