Group B Streptococcus Bacteria Test

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It is not unusual for some healthy women to harbor Group B streptococcus bacteria in their rectum and vagina. These microorganisms do not usually cause disease when few in number, but when they grow in number and colonize these areas, bacterial infection can become severe.
A woman who is pregnant and tests positive for Group B strep or GBS may pass the bacteria to her baby during childbirth. GBS affects one out of 2,000 newborns in the US although not all babies born to GBS-positive mothers become ill. Doctors may routinely test pregnant women for GBS during their prenatal visits even if this type of infection is rare because severe outcomes can occur.

Why Is a Group B Strep Test Needed?
Although harmless to most adults, pregnant women may experience health problems associated with these bacteria, which can cause:
UTI or urinary tract infection
Chorioamnionitis (infection of the amniotic fluid and placenta)
Bacteremia (infection of the blood)
Sepsis (severe, widespread infection)
After normal delivery, GBS can also lead to infection of the inner lining (endometrium) of the uterus. For mothers who deliver by C-section, wound infection risk is increased.
A prenatal test for group B strep may also be done to protect a baby from exposure to the bacteria during normal childbirth. Although not all babies develop infection, affected babies could suffer from severe complications immediately or even sometime after birth. These life-threatening complications include:
Pneumonia (lung infection and inflammation)
Meningitis (infection of the membranes covering the brain)
Bacteremia
Sepsis
Women who test positive for GBS are usually given antibiotics during childbirth to eliminate bacteria in their birth canals. However, there is no ben...

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...et a late-onset GBS infection are delivered by GBS carriers, while others are infected through unknowm mechanisms. Prevention of the disease is therefore difficult.
Research on developing a vaccine that can prevent maternal and neonatal GBS infection is underway. More studies on testing and treatment for the disease are also being done.

Watch a video to learn more about Group B Strep Test (GBS) test: http://www.youtube.com/watch?v=-V4XADC89p8
Summary
Group B strep test is a prenatal screening test to find out if a woman is carrying certain streptococcal bacteria, which could cause maternal and neonatal infection. It is important to prevent infection, since it can cause severe complications.

Works Cited

http://americanpregnancy.org/pregnancycomplications/groupbstrepinfection.html
http://www.babycenter.com/0_group-b-streptococcus-screening_1647.bc?showAll=true

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