Percentage distribution of blood types and Rh factor can
change from one ethnic group to another but statistically speaking most common
blood types are O Rh negative and A Rh positive
Blood Type
Abbr
% Frequency
O Rh-positive
O+
38%
O Rh-negative
O-
7%
A Rh-positive
A+
34%
A Rh-negative
A-
6%
B Rh-positive
B+
9%
B Rh-negative
B-
2%
AB Rh-positive
AB+
3%
AB Rh-negative
AB-
1%
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