How rare is O negative blood?

O Negative is not the rarest blood group but it is AB Negative. O Negative is a rare blood group because both conditions i.e. O and Rh neg are recessive traits and the probability of these two coming together is further rare. read more

However, O negative blood type is relatively rare compared to the other blood types. It is only present in 1 out of 15 individuals. This means approximately 6.6% of the population has O negative blood. However, not all of the ethnic groups share the same proportions of O negative blood types. read more

Similarly for RhD negative people, there is a risk associated with travelling to parts of the world where supplies of RhD negative blood are rare, particularly East Asia, where blood services may endeavor to encourage Westerners to donate blood. read more