If the mother is RH+ they don't give RhoGam. There is no need.
Your question is not real clear, but maybe this will answer your question. When a woman is rh neg and conceives with a rh pos male, her body may reject the baby due to the blood type of the baby. A medication called RhoGam is used to prevent the loss. The first shot is usually administered after the 13th wk and a second after the birth to prevent hemmorhage. Dosing may vary by dr. There is no need for treatment for the baby.