Talk about a lonely hearts club. An unnamed woman from Guadeloupe has the rarest blood type on earth, to the extent that she’s only compatible with herself.

By the same token, Stowell says people with type O blood shouldn’t assume they have a free pass when it comes to COVID-19. Regardless of blood type, people should continue to take the proper ...

The blood type of B negative is also uncommon, occurring in "2% of Caucasian, 1% of African American, 0.4% of Asian and 1% of Latino American" populations, according to the American Red Cross.

French scientists have discovered a new blood type in a woman from the Caribbean island of Guadeloupe, France's blood supply agency announced Friday. The woman is the only known carrier of a new ...