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This can be a cause if the baby had a low blood count from birth or very shortly after, especially if this is not the first pregnancy. Hemolytic disease of the newborn can be caused by the mother's antibodies attacking the baby's red blood cells if the baby if Rh positive and the mother is Rh negative. The antibodies get into the baby before birth, however, so if the baby developed a low blood count at 3 months it would not be because of the negative/positive blood type.

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Q: 3 mo old baby has a low blood count mother is negative blood and father positive can this be the cause of the low blood count?
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Related questions

Can a father with A-negative blood have a child with A-positive blood?

Yes, a father with A negative blood can have a child with A positive blood. If he does, the mother must have a positive Rh factor, and the mother's blood type may be any of the possibilities.


Is it possible for a child to have O negative blood if the mother has A positive blood and the father has A positive blood?

No.


Can a child have o positive blood if the mother has A positive and the father has A negative blood?

yes.


If the mother has B positive blood and the father has O negative what would the child's blood type be?

B positive or negative or, O positive or negative.


Can a mother with B positive blood and father with O positive blood have a baby with B positive blood?

Yes, a mother with negative and a father with O positive can have a baby with B positive. If they do, the mother must have blood type B or AB.


Can a mother with a negative blood and a father with ab negative blood have a child with b positive blood?

yes


If a Mother is A positive blood group and a Father is A positive blood can they have a child that is A negative blood group?

95% not.


Can a mother with A positive blood and father with O positive blood have a baby with A negative blood?

No. Rh negative is a recessive gene. Positive people do not carry it.


Can a o negative blood type father and a negative blood type mother have o positive child?

I'm not sure how negative or positive is determined, but a B mother and O father can have a B child.


Your father has a positive blood and your mother has o positive and you have a negative is this possible?

yes


Can a baby have A positive blood if the mother is O positive and the father is O negative?

No


If the father's blood type is A positive and the mother's blood type is O positive can the child's blood type be O negative?

No, because a baby gets their blood from their father, not their mother.