Group B Strep (cont.)

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Is it possible to prevent group B strep infection?

At this point in time, the best measure for preventing GBS infection is through routine screening during pregnancy. This testing has served to decrease the overall number of early onset GBS infections in newborns by about 80% since aggressive preventive measures were instituted in the 1990s. In pregnant women, routine screening for colonization with GBS is strongly recommended. This screening test is performed between 35-37 weeks’ gestation. The test involves using a sterile swab to collect a sample from both the vaginal and rectal areas, with results usually available within 24-72 hours.

Antibiotic administration during labor to pregnant women colonized with GBS and for those with the risk factors outlined above can help prevent the transmission of GBS infection, and thus decrease the incidence of early onset GBS disease in newborns.

Though there is currently no vaccine available for the prevention of GBS infection, there is research under way to develop one for use in the near future.


United States. Centers for Disease Control and Prevention. "Group B Strep (GBS)." June 1, 2014. <>.

Medically Reviewed by a Doctor on 4/10/2015

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