O negative blood group is definitely rare, about 5 to 7% people of this world have the blood type; but AB negative group is rarest, not more than 1% people have the blood type in the world.
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https://nursingschoolessays.com/wp-content/uploads/2019/12/logo1.png00adminhttps://nursingschoolessays.com/wp-content/uploads/2019/12/logo1.pngadmin2021-06-29 18:35:402024-04-13 05:12:16Is O Negative a rare blood type?