K.
S.,
I'm a Labor and Delivery nurse and I used to work in the NICU...here's the best info I can offer. There is no way to prevent GBS...it generally grows in most women...the problem occurs when too much of it grows...GBS was likely the cause of her preterm birth but maybe not there are alot of factors that affect why women give birth early..GBS is definitely one indicator but may not be why she actually gave birth early last time...the truth is she will probably be GBS positive again with this pregnancy...if she carries to term they will treat her from the time she gets to the hospital until her delivery and the baby will do fine. If she goes into preterm labor they will more than likely swab her(to test for GBS) or treat her with antibiotics just in case. I hope all this information helps you and I pray for a term delivery.
K.