The risk is if bub inhale the virus into the lungs on passing through the vag passage. Can cause severe respiratory problems.
YOU get the ab's as a prophalactic NOT bub.
I had the GBS and got 1 dose of avb's as begining or labour and it is givem 4th hourly during. You dont need a drip so your hands are free - thy push it straight into your veins - it dpesnt hurt. As my labour was 2 hours i didnt require anymore than the once off dose and Ashley is fine.