![]() ![]() Type O blood is required and must be available in inventory for newborn babies and emergency patients. In fact, there are millions of ways we can categorize our blood types - we just haven't defined all of them yet. Patients with any blood type can receive O negative blood. See also: Blood Type Frequencies by Regions, Tribes and Ethnic Groups including the Rh Factor. It should be noted that while the ABO and the Rh+ and Rh- blood type group systems are the ones we are most familiar with, there are way more ways to classify our blood types. Below are some of the sources as well as additional information to the blood type frequencies by countries: A big thank you to Lasse Westvang Hougaard for contributing to these studies. ![]() Blood type B makes up only 10% of the population, while blood type AB is the rarest at 4%. All other donors and recipients must be safely matched, for example: Percentages based on U.S. 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:Īnd here's a more precise percentage breakdown from most common to least common blood types in the US:Īnd 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%). Donors with types AB- and AB+ blood are universal plasma donors, while patients with type AB+ are universal red cell recipients because they can receive red cells from all types. The reduction in risk appeared to be about 9 to 18 percent for people with an O blood type compared with other blood types, among which there was little difference in susceptibility. 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? People with the O blood type (whether O positive or O negative) had a lower incidence of COVID-19 positive tests. ![]()
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