Blood Type Prevalence Us

December 02, 2020

Statistics from the american red cross show that the following are the most rare forms of the. Blood type b makes up only 10 of the population while blood type ab is the rarest at 4.

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Only 18 of people in the u s.

Blood type prevalence us. It is the most common blood type among australian aborigines celts those living in western europe and in the united states. Up to 53 of latin americans and 47 of african americans have blood type o. This list concerns blood type distribution between countries and regions blood type also called a blood group is a classification of blood based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells rbcs.

These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system. This article is part of harvard medical school s continuing coverage of medicine biomedical research medical education and policy related to the sars cov 2 pandemic and the disease covid 19. Some blood types are more common in certain groups.

Blood type b is more common in asians 25 and less common in latin americans and caucasians both at 9. O negative is the universal blood type this means anyone can receive o negative blood. And if you disregard the rh and rh blood type classification system and just look at o a b and ab blood types the most prevalent blood type in the us is blood type o 44 with blood type a at a close second 42.

The majority of people in any geographical region are rh positive. The o blood type is the most common around the globe and is carried by nearly 100 of those living in south america. Yet when someone with a negative blood type needs blood only another person with a negative type can save his or her life.

Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross. Abo and rh blood type frequencies in the united states. The least common blood type in the u s.

Is ab with less than 1 of the population having this type. In comparison only 39 of asians and 37 of caucasians have this type. 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.

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. Have a negative blood type. Scientific facts negative blood types.

In general the rarest blood type is ab negative and the most common is o positive. Blood type is not associated with a severe worsening of symptoms in people who have tested positive for covid 19 report harvard medical school researchers based at massachusetts general hospital. Abo type rh type how many have it.

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