Below is information collated me, baby Faiths Mum specific to POGBS.  This was passed on to my consultant when questioning why POGBS is not recognised here in the UK.

 Amazingly my consulatant has written to The Royal College of Obstetricians and Gynaecologists (RCOG) and asked "if the time is now ripe for them to review and amend their guidelines"  

The bacteria can sometimes be passed on to the baby through the amniotic fluid (a clear liquid that surrounds and protects the unborn baby in the womb) or as the baby passes through the birth canal during labour.

Most babies exposed to strep B will be unaffected, but in around 1 in every 2,000 cases they can become infected.

A strep B infection during pregnancy can also cause miscarriage or stillbirth, but this is rare.

http://www.nhs.uk/chq/Pages/2037.aspx

What are the risks of group B streptococcus (GBS) infection during pregnancy?

Extremely rarely, GBS infections during pregnancy can also cause miscarriage, early (premature) labour or stillbirth.

http://www.nhs.uk/Conditions/Stillbirth/Pages/Causes.aspx

Causes of stillbirth - Infections

Around one in 10 stillbirths are caused by an infection. The most common type of infection is a bacterial infection that travels from the vagina into the womb (uterus). These bacteria include group B streptococcus,

http://gbss.org.uk/who-we-are/about-gbs/what-is-gbs/faqs/

Are membrane sweeps safe for women who carry GBS?

There is currently no good evidence that membrane sweeps are harmful in women known to carry GBS. Indeed the results of trials of membrane sweeps don’t show any increase in problems caused by GBS in women having sweeps, and it is highly likely these trials would have included many women carrying GBS at the time.

However, there remains a theoretical risk that a membrane sweep might occasionally introduce GBS into the uterus, and so our medical advisory panel advises caution in using a membrane sweep for women known to carry GBS when there are other acceptable alternatives (for example, induction of labour with prostaglandin gel introduced into the vagina)

http://www.ncbi.nlm.nih.gov/pubmed/?term=3290476

Perinatal group B streptococcal infections across intact amniotic membranes.

We reviewed the perinatal mortality due to group B streptococcal infection over a three-year period at a tertiary center. In 6 of 16 perinatal deaths due to group B Streptococcus, representing a range of gestational ages, infection occurred with the membranes intact. A review of reports from the obstetric and pediatric literature revealed that 10-50% of group B streptococcal infections occur in this manner. 

http://www.gbss.org.uk/filepool/2012_07_13_The_Facts_4_HealthProfessionals.pdf

Pre-birth Complications & GBS 2.3.1 Stillbirth and late miscarriage along with many other bacteria found in the vagina, GBS can cause infection in a baby whilst still in the womb, which can cause stillbirth. GBS can live in amniotic fluid and from here can spread into the baby’s lungs and, from there, into the baby’s bloodstream where they may cause infection, which can result in the baby’s death. Bacteria will most probably have been passed from the mother to her baby before or during delivery

The 3 ways in which a baby becomes infected with GBS are: 2.5.1 Before birth There are physical and chemical barriers to keep bacteria from getting inside the baby, including the cervical canal, the mother’s immune system and the amniotic fluid. If GBS get inside the baby, they will normally be attacked by the baby’s immune system, although GBS can sometimes foil this immunological attack. In pregnant women who carry GBS, the bacteria can travel from the mother’s vagina into the baby’s bloodstream. To do this, they cross the cervix and have an enzyme, called hyaluronate lyase50, which can punch microscopic holes in apparently intact amniotic membranes, normally without causing any sign or symptom of these rupturing. Unlike many bacteria, GBS can live in amniotic fluid and from here spread into the baby’s lungs and into the baby’s bloodstream, where they may set up an infection46. At each stage of the journey, the bacteria come up against the mother’s or baby’s natural defences and, the vast majority of times, invasion is prevented. However, when infected with GBS before birth, none of these natural defences has protected the baby, who develops early onset infection. Once an infection has developed, this can lead to shock (a dangerous reduction of blood flow throughout the body tissues that, if untreated, may lead to collapse, coma and death.

http://www.obgyn.net/articles/prenatal-onset-group-b-strep-pogbs-disease

Prenatal-onset Group B Strep (POGBS) Disease

Group B strep (GBS) can definitely infect babies before birth, yet there is not an official name designated for GBS disease when it causes babies to be miscarried or stillborn. To further awareness and prevention of GBS disease in all stages of a baby’s development, Group B Strep International is giving a name to GBS disease acquired before birth: Prenatal-onset Group B Strep (POGBS) Disease. 

However, a baby can definitely succumb to GBS infections long before the bacteria are transmitted during delivery. Since this is not yet a recognized disease it is unknown how many babies have been miscarried or stillborn due to GBS. Pathology testing is not mandatory and not even always suggested to the mother. At minimum, placental culturing may tell the cause of death. This is important especially since having a baby infected by GBS puts a mother at higher risk for subsequent babies being infected by GBS.

Perhaps the reason that prenatal-onset GBS disease has not been officially recognized is that the general medical opinion considers GBS-caused miscarriages and stillbirths to be rare occurrences. However, among GBS awareness groups, there are far too many parents who have had their baby’s autopsy or placental testing report cite GBS as the cause of death for prenatal-onset GBS disease to continue being regarded as rare.
, GBS may be introduced to the baby during routine cervical checks and other invasive procedures such as intrauterine fetal monitoring, application of cervical ripening medications, and “membrane stripping” sometimes known as “membrane sweeping.” 
Membrane stripping can introduce infection5 although there is a debate about whether or not it is directly related to a higher incidence of GBS infection. However, it has been proven via dye tests that small particles can ascend through the cervix. Case studies of dead or very sick babies at birth point to a direct correlation. Common sense alone dictates that if a gloved hand or instrument is moved through the lower third of the vagina (where GBS usually colonizes) and then up into the cervix that GBS or other bacteria can be moved closer to where the baby can be harmed. A recent legal case examines the potential for litigation regarding membrane stripping.6 

http://www.groupbstrepinternational.org/what-is-group-b-strep/prenatal-onset-3/

The term, “prenatal-onset GBS disease” was presented by GBSI at the Center for Disease Control and Prevention’s GBS Guideline Re-evaluation Meeting in June 2009 and then included on page 23 of the resulting guidelines for early-onset GBS disease prevention issued in the November 19, 2010 MMWR. Previously there was no specific name given to GBS disease resulting in miscarriage or stillbirth, but pregnancy is a distinct time when unborn babies can become infected by GBS.

Although there are currently no prevention guidelines in place for prenatal-onset GBS disease, GBSI has identified three knowledge-based strategies to help prevent babies becoming infected by group B strep before birth. 

GBS can cross intact membranes and invasive procedures can help transport GBS closer to the baby. Please click here for medical abstracts on the risk of infection due to invasive procedures.

http://www.groupbstrepinternational.org/about-gbsi/

The mission of Group B Strep International (GBSI) is to promote international awareness and prevention of Group B Strep (GBS) disease in babies before birth through early infancy.  

https://www.rcog.org.uk/en/guidelines-research-services/guidelines/gtg36/

Group B streptococcus (Streptococcus agalactiae) is recognised as the most frequent cause of severe early-onset (at less than 7 days of age) infection in newborn infants. However, there is still controversy about its prevention.

http://legacy.screening.nhs.uk/groupbstreptococcus

The UK NSC recommendation on Group B Streptococcus screening in pregnancy

GBS is one of many bacteria that can be present in our bodies. It usually causes no harm. This situation is called carrying GBS or being colonised with GBS. GBS is commonly found in the digestive system and the female reproductive system. It's estimated that about one in four pregnant women in the UK carry GBS.

Around the time of labour and birth, many babies come into contact with GBS and are colonised by the bacteria. Most pregnant women who carry GBS bacteria have healthy babies. However, there's a small risk that GBS can pass to the baby during childbirth. Rarely, GBS infection in newborn babies can cause serious complications that can be life-threatening.

Extremely rarely, GBS infection during pregnancy can also cause miscarriage, early (premature) labour or stillbirth. If a baby develops GBS infection less than seven days after birth, it's known as early-onset GBS infection. Most babies who become infected develop symptoms within 12 hours of birth.  It's estimated that about one in 2,000 babies born in the UK and Ireland develops early-onset GBS infection. This means that every year in the UK (with 680,000 births a year) around 340 babies will develop early-onset GBS infection.

http://www.sciencebasedbirth.com/ObGynNews%2001a/OBN%20Cx%20manip%20leads%20infection%20Oct01.html

In a series of eight case reports, Dr. Stamm of the University of Colorado, Denver, described how cervical manipulation or membrane stripping preceded perinatal sepsis and even one instance of stillbirth caused by invasive group B streptococcus (GBS) as well as other pathogens.