You Are Here: Home » Human » How Many Blood Types Are There

How Many Blood Types Are There

There are 8 different blood types (A+, A-, B+, B-, O+, O-, AB+, AB-). The most well known and medically important blood types are in the ABO   group.  They were discovered in 1900 and 1901 at the University of Vienna by Karl Landsteiner in the process of trying to learn why blood transfusions sometimes cause death and at other times save a patient.  In 1930, he belatedly received the Nobel Prize for his discovery of blood types.

All humans and many other primates can be typed for the ABO blood group.  There are four principal types: A, B, AB, and O.  There are two antigens and two antibodies that are mostly responsible for the ABO types.  The specific combination of these four components determines an individual’s type in most cases.  The table below shows the possible permutations of antigens and antibodies with the corresponding ABO type (“yes” indicates the presence of a component and “no” indicates its absence in the blood of an individual).

ABO
Blood Type
Antigen
A
Antigen
B
  Antibody
anti-A
  Antibody
Anti-B
A yes no no yes
B no yes yes no
O no no yes yes
AB yes yes no no

Blood Types

 

  1. A+
  2. A-
  3. B+
  4. B-
  5. O+
  6. O-
  7. AB+
  8. AB-

 

Blood type A

  • As type A blood is common, it is in constant demand and more is always needed.
  • By giving blood regularly you can help other As and also people with AB blood types.

Blood type B

  • As type B is one of the rarest blood types, B type blood donors are always needed, particularly for plasma donations.
  • By giving plasma regularly, you can help people with B and O blood types.

Blood type O

  • As type O blood is the most common, it is in constant demand and more is always needed.
  • By giving blood regularly you can help other Os and also people with AB, A and B blood types.

Blood type AB

  • Even though type AB is the rarest blood type, type AB plasma can help people with any blood type. So, more type AB plasma donors are always needed.
  • By giving plasma regularly you can help people with AB, O, B and A blood types.

ABO and Rh distribution by country

ABO and Rh blood type distribution by nation (population averages)
Country Population O+ A+ B+ AB+ O- A- B- AB-
Australia 22,015,576 40% 31% 8% 2% 9% 7% 2% 1%
Austria 8,219,743 30% 37% 12% 5% 6% 7% 2% 1%
Belgium 10,438,353 37% 38% 7% 2.5% 7% 7% 1% 0.5%
Brazil 198,739,269 36% 34% 8% 2.5% 9% 8% 2% 0.5%
Canada 33,487,208 39% 36% 7.6% 2.5% 7% 6% 1.4% 0.5%
Denmark 5,500,510 35% 37% 8% 4% 6% 7% 2% 1%
Estonia 1,299,371 30% 31% 20% 6% 4.5% 4.5% 3% 1%
Finland 5,250,275 27% 38% 15% 7% 4% 6% 2% 1%
France 62,150,775 36% 37% 9% 3% 6% 7% 1% 1%
Germany 82,329,758 35% 37% 9% 4% 6% 6% 2% 1%
Hong Kong 7,055,071 40% 26% 27% 7% 0.31% 0.19% 0.14% 0.05%
Hungary 10,198,315 31% 38% 18.8% 12.2%
Iceland 306,694 47.6% 26.4% 9.3% 1.6% 8.4% 4.6% 1.7% 0.4%
India 1,166,079,217 36.5% 22.1% 30.9% 6.4% 2.0% 0.8% 1.1% 0.2%
Ireland 4,203,200 47% 26% 9% 2% 8% 5% 2% 1%
Israel 7,233,701 32% 34% 17% 7% 3% 4% 2% 1%
Italy 60,742,397 40% 36% 7.5% 2.5% 7% 6% 1.5% 0.5%
Japan 127,799,000 29.9% 39.8% 19.9% 9.9% 0.15% 0.2% 0.1% 0.05%
Netherlands 16,715,999 39.5% 35% 6.7% 2.5% 7.5% 7% 1.3% 0.5%
New Zealand 4,213,418 38% 32% 9% 3% 9% 6% 2% 1%
Norway 5,000,000 34% 40.8% 6.8% 3.4% 6% 7.2% 1.2% 0.6%
Poland 38,482,919 31% 32% 15% 7% 6% 6% 2% 1%
Portugal 10,707,924 36.2% 39.8% 6.6% 2.9% 6.0% 6.6% 1.1% 0.5%
Saudi Arabia 28,686,633 48% 24% 17% 4% 4% 2% 1% 0.23%
South Africa 49,320,000 39% 32% 12% 3% 7% 5% 2% 1%
Spain 48,125,002 36% 34% 8% 2.5% 9% 8% 2% 0.5%
Sweden 9,433,875 32% 37% 10% 5% 6% 7% 2% 1%
Taiwan 24,000,000 43.9% 25.9% 23.9% 6.0% 0.1% 0.1% 0.01% 0.02%
Turkey 76,805,524 29.8% 37.8% 14.2% 7.2% 3.9% 4.7% 1.6% 0.8%
United Kingdom 61,113,205 37% 35% 8% 3% 7% 7% 2% 1%
Ukraine 45,706,120 ~40% ~10%
United States 307,212,123 37.4% 35.7% 8.5% 3.4% 6.6% 6.3% 1.5% 0.6%
Population-weighted mean (total population = 2,261,025,244) 36.44% 28.27% 20.59% 5.06% 4.33% 3.52% 1.39% 0.45%
Tags:


Leave a Comment


− six = 1

Copyright © 2012-2013 How Many Are There. How many are there questions and answers.

Scroll to top