Which Blood Type Is The Rarest In The World?
AB-negative is the answer to which blood group is considered the rarest worldwide. It appears in only a very small fraction of the global population because it combines the least common ABO type with the negative Rh factor.
Source:
https://www.youtube.com/watch?v=D0cjN9Og1ds
https://www.threads.com/@beliproduk.official/post/DUVjXAOkhNQ