Scientists discover world's rarest blood group in 3 people

Scientists in Thailand have found a very rare blood type called B(A) in only three people out of more than 544,000 blood samples tested.

This blood type is a special kind of mutation where the blood cells show a typical Type B profile but also have small amounts of A-antigen.

This makes it very different from regular blood types like A, B, O, and AB.

Blood types are important because they help doctors know which blood can be safely given to someone during a transfusion.

The B(A) blood type is so rare that it's found in only about 0.00055% of people.

Other rare blood types include O-negative, Rh-negative, CRIB, and Gwada-negative, which are also very hard to find.