After half a century of puzzling over a handful of unexplained transfusion reactions, researchers have finally traced the problem to something hiding in plain sight: an entirely new blood group system ...

In a routine blood test that turned extraordinary, French scientists have identified the world's newest and rarest blood group. The sole known carrier is a woman from Guadeloupe whose blood is so ...

Researchers from the UK and Israel have identified a new blood group system in humans, marking a major breakthrough in hematology. The discovery, published in September, stems from a puzzling case in ...

A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type, dubbed "Gwada negative," France's blood supply agency has announced. The ...

In 2011, a woman from the French overseas region of Guadeloupe underwent routine tests before a surgery. Strikingly, doctors could not identify her blood group, which was so unique that they did not ...