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Answer is A.
I get why II is wrong.
But why would antibodies from another mother help the infant? Wouldn't these antibodies be seen as foreign in the infant?
Also, is vaccination actually ineffective for newborns in comparison to children?
I get why II is wrong.
But why would antibodies from another mother help the infant? Wouldn't these antibodies be seen as foreign in the infant?
Also, is vaccination actually ineffective for newborns in comparison to children?