@footnotehealth: Only 1 Known Person Has This Blood Type. Her Only Matching Donor Is Herself Only one person on Earth is known to have Gwada negative blood, and the only donor whose blood matches hers is herself. It started with a routine blood test before surgery in Paris in 2011. The case sat unsolved for eight years, until researchers reopened it in 2019 and read about 22,000 of her genes to work out why. This is how blood types work as ID badges on your red cells, why every donor sample reacted against hers, and how one tiny missing sugar became the 48th blood group system ever recognized. Sources: International Society of Blood Transfusion announcement, August 2025; French blood service (EFS), June 2025; family details from an EFS biologist quoted by the AFP news agency, June 2025. #bloodtype #blood #genetics #science #health

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Saturday 31 October 2026 22:29:31 GMT