Your standard A/B/O blood types have NOTHING to do with being immune to HIV.
On the contrary, bloodtype AB is not rare. Bloodtype AB is a great blood type since it can recieve blood from both bloodtypes A and B. The rarest bloodtype there is, is bloodtype O.
his bloodtype is AB
AB
a+, a-, b+, b-, o+, o-, ab+, ab-
type AB
AB , the rarest bloodtype.
Humans have 8 blood types: A+ and A- B+ and B- AB+ and AB- O+ and O- all types can receive donations from their individual blood type (for example anyone with A+ can receive and donate to other A+ members) in addition, anyone with A+, A-, B+, and B- can donate to anyone who has AB+ or AB-. O- can receive all types and AB+ can donate to all types
They cannot receive bloodtypes AB or B. They can receive bloodtypes A and O.
The baby could have almost any bloodtype except for O.
The father's blood type must be O, Rh genotype can't be determined.
Rh O negative is the universal donor, and can be given to anyone regardless of their bloodtype.
as in all populations the frequency of Ab+ blood is quite small this ranges from 2.5-9% in Iceland and Korea respectively Jewish people, based upon the statistics from Israel has a fairly average frequency of Ab+ with 7% which is on par with Turkey, Finland and the Czech Republic. Hence if what you were looking for was a correlation between bloodtype and populations, I'd suggest otherwise. From the data bloodtype frequency on a whole is quite in-congruent with geographical dispersion of population i.e Hong Kong and Australia have percentage frequencies similar to each other despite entirely different racial populations.