Lookback investigations of <i>Babesia microti</i>–seropositive blood donors: seven‐year experience in a <i>Babesia</i>‐endemic area

Abstract

Recipients of components from B. microti-positive donors were infected via transfusion, with index donations from parasitemic donors posing the greatest transmission risk. This report of B. microti transmission detected through LB, coupled with ongoing TTB cases, indicates that interventions are needed to reduce transmission of B. microti to US blood recipients.