evidence: "UPDATED eligibility requirements from @RedCross now BANS certain covid VACCINATED people from donating blood!" reads one post on X that had received more than 3,200 likes and shares as of Friday. "(Another conspiracy theory proved true!) PURE BLOODS BE PROUD. The rest of you…retweet to warn your tainted friends and family." [...] "There is no reason why a potential donor would be declared absolutely ineligible solely because they received a COVID vaccine," Daniel Parra, a spokesperson for the Red Cross, told the AP in an email. [...] "Blood donations from individuals who have received a COVID-19 vaccine approved or authorized for use in the U.S. are safe for transfusion," reads a joint statement written last month by the Red Cross, America’s Blood Centers and the Association for the Advancement of Blood & Biotherapies.