GBS infection during pregency

I had it for my first but I was cleared for my second. Like the mummies said earlier, you will be put on some antibiotics administered through IV during labour. Some gynaes also give pills towards the last stage of pregnancy. I have asked my gynae before what is the cause and how can it be prevented. But there is no confirmed cause of it and there's nothing you can do to prevent it either. That's why all will have to go through swab test.