Single Parenting Support Group
Today being raised by a single parent is not uncommon. About three in ten children live in a single parent home. The most common type of single parent home is one with only a mother. However, single father homes are the fastest growing type of family situation; 60% growth in the last ten years alone.
First, you are doing the right thing for your child. A newborn's immune system is not developed yet and a world-wide pandemic virus is not the way to get it started. So, the first way you deal with the girlfriend is to know that YOU are the one who is technically RIGHT! Secondly, this is your baby, not hers. She really has no right to any input on this decision. She can have an opinion, just like any other person, but that has nothing to do with your decision. (Also, I'll bet your baby's doctor sees it the same way you do. So, if you get tired of relying on your positional authority as the parent, feel free to switch over to explaining your decision by referring to the doctor's expertise).
Best wishes.