Health Patients are requesting that blood transfusions come from people who they know have not been vaccinated against covid-19, which can cause dangerous delays Facebook / Meta Twitter / X icon Linkedin Reddit Email Donated blood usually comes from anonymous volunteers, and is screened for safety Getty Images A hospital in the US has had to concede to an unusual request from patients requiring blood transfusions: that they come from donors who haven’t been vaccinated against covid-19 . This has led to delays in treatments that caused one individual to experience a life-threatening reaction. “These requests were often driven by misinformation about vaccine safety and the blood supply, rather than evidence-based transfusion concerns,” says Jeremy Jacobs at Vanderbilt University Medical Center in Nashville, Tennessee.…