Most Common Blood Type Chart

February 13, 2021

Central and eastern europe type a is common in central and eastern europe. Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross.

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In countries such as austria denmark norway and switzerland about 45 50 of the population have this blood type whereas about 40 of poles and ukrainians do so.

Most common blood type chart. The highest frequencies are found in small unrelated populations. In general blood type o positive is the most common blood type in the world while ab negative is considered the rarest but does this trend apply to the blood type distribution in the us. In general the rarest blood type is ab negative and the most common is o positive.

In the united states o is the most common blood type found in about 37 of the population followed by a in around 36 of people according to the stanford school of medicine blood center. Dean 2005 2 1 4. There are four major blood groups determined by the presence or absence of two antigens a and b on the surface of red blood cells.

In addition to the a and b antigens there is a protein called the rh factor which can be either present or absent creating the 8 most common blood types a a b b o o ab ab. Using data from wikipedia and the standford blood center reddit user foiltape put together this pie chart that shows the most common and least common blood types in the us.

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