From my understanding, having a negative blood type is more rare than having a positive one. if you are a female this type of blood could require certain actions to help you and your baby during pregnancy. While I don't have it, I do know people who have gone through a pregnancy with that help (a few injections) and it was no big deal.
According to the red cross website AB- is the rarest blood type, but B- and AB+ are also rare. Ethnicity may impact blood type: O- is rare in Asian people but relatively common for Caucasians.
The most common blood type is A positive and the most rare is type O.
You can visit your doctor's office and they can do a test to determine which blood type you are. You then may go to American Red Cross website and they can help determine if your blood type is rare.
While type O negitive blood is pretty rare, the rarest blood type is actually AB negitive. It represents only about .6% of the populations blood types.
AB negative is the rarest blood type. AB positive is the second rarest blood type. The negative blood types are more rare than the positive. The common blood type is o.
Ultra rare omega rare
Rare blood types are O negative and AB negative. B negative and AB positive are also fairly rare blood types. O negative is known as the universal donor blood type because it is compatible with any other blood type.
Blood type O negative is the most rare blood type. There are several online resources for information on blood type (WebMD is a good choice) or you can consult with your doctor for more information specific to your blood type.
AB blood type is rare. It is also a rather new blood type. People with this blood type have qualities of people with A and sometimes characteristics of those who have type B. Less than 5% of the population in America has this.
The O blood type is rare. Though it is rare, there are is also other positive and negative sides to having this blood type. The positive is that people with this blood type can be donors to people of any other blood type but the fact is they can only receive their own type.
Approximately 9.4% of the population has the B+ blood type.
There are many bloodtypes--both positive and negative. I know, from experience, that o positive blood type is not rare. It is used as the universal donor. A-, B-, AB- are known to be rare blood types. I believe o- is a rare blood type, as well. A good book from the public libary would further esplore the many different blood types and the statistics correllated with specific blood types.