Quoting Tracy Spear:" lol ya I just read it. and the comments, people don't understand that's it' s an infectious bacteria and with out the correct amounts of antibiotics the baby can get very sick. "
Have you looked at the odds of something happening? They aren't very high. And unless you have warning signs through your labour, your baby is very unlikely to get sick.
And there is always the chance that the baby will be infected after the birth, by someone who hasn't washed their hands well.
2 Doses, 4 hours apart is the standard treatment for everyone.
My first child, I had one only one dose (I don't know what type of antibiotic). She was fine. My second child, I didn't have any because he came too quickly. He was completely fine. With both, my water broke just before or as I was pushing. I didn't have a temperature.