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I'm a bit confused here. You say that: "The blood type is part of the medical record.Each practice or institution would be required to keep that for a period of years.7 years past the 18th birthday. But this would not be in a central government data base and is subject to privacy." <---Then how can people make charts regarding blood types here in the U.S. and around the world? If AB neg is 0.6% or 1 person in 170+ and another example of the ABO negative which is 1 out of 250,000 people worldwide (aka Bombay blood type) then how can this data be kept in privacy?
I found references that tell of the government keeping track of the rarest blood types and that all Rh negative people are kept track of as well because science does not know (or not saying) where the Rh negative factor is from. That the Rhesus factor (aka monkey blood) can be cloned and the negative blood factor (no monkey blood) cannot be cloned period. So I feel that someone is indeed keeping records. Right?
Thank-you so much for at least trying to answer my question Dr. Thomas. = )