I have been watching this thread with interest but didn't want to butt in until I had something positive to say, but since www has made a mention I will tell you what happens in our unit.
At the moment we do not routinely test for GBS because the yest is so unreliable with false negatives. However, we are doing High Vaginal Swabs for women who present thinking their water might have broken, to pick up any signs of infection. Often the waters have not actually broken and it is really a watery discharge. If that swab result comes back positive for group B strep then we offer IV antibiotics in labour.
Once it has been detected in one pregnancy, antibiotics are offered in labour for all subsequent pregnancies.
We also give antibiotics to women whose waters have been broken for a long time, who develop a temperature etc.
I am trying to get our procedure changed in that low vaginal and rectal swabs are more reliable. The new US guidelines have been published and now, thanks to mumsnet, I have learnt about the new type of testing which is not available on the NHS as yet.
There has been a reluctance to routinely swab women because many do have GBS without ever having any problems. There is a concern about the widespread use of IV antibiotics, as that is not without side effects.
However I have been in the position being with a woman when the the heartbeat disappeared in the second stage. The baby was stillborn despite resuscitation attempts immediately as she was born. The labour had been totally normal up till that point, the mum spending most of her time in the pool. The post mortem results showed that the baby had been infected with group B strep.
I am raising awareness amongst my colleagues of current guidance on the GBS website but it is a slow process. Scotland has devolved health so the EDM does not have such significance here as it does in England. I will however keep raising awareness and let you know what happens.