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 ...

For example, the 44 th member of this group, known simply as “Er,” was discovered in 2022, meaning that scientists are currently discovering more than one new blood group a year.

After 15 years of research, French scientists identified a new, 48th blood group system called \\"Gwada negative\\" from a routine pre-surgery blood test.