[Answer] Which blood type is the rarest in the world?

Step 1 : Introduction to the question "Which blood type is the rarest in the world?"

...AB- is the least common blood type in the world, found in roughly 1% of the global population. Its rarity comes from the combination of two uncommon traits: the AB blood group, which already appears infrequently, and a negative Rh factor, which further narrows the pool. While people with AB blood types are considered universal recipients within the ABO system and can receive red blood cells from any ABO group, those who are Rh-negative can only safely receive Rh-negative blood. As a result, AB- blood is extremely difficult to source.

Step 2 : Answer to the question "Which blood type is the rarest in the world?"

AB-:

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