Can an infection you don't even know you have be harmful to your baby? This scary prospect is a real one for almost one in every 1,000 U.S. newborns infected with Group B streptococcus (GBS). Although GBS is mainly a problem for newborns, it's also a common cause of postpartum uterine infections in women, resulting in fever, abdominal pain, and rapid pulse.
Between 10 and 30 percent of pregnant women have GBS in their vaginal or rectal area; each carries a one in 100 chance that her baby will become infected. Most people who harbor GBS aren't aware of it, because it rarely causes any symptoms. The bacterium lives in the gastrointestinal tract, along with numerous other bacteria that are harmless to most people. However, if GBS is absorbed by baby as he passes through the birth canal -- for example, by ingesting vaginal fluids during delivery -- it could make him very sick.
There are two forms of GBS infection in infants:
Fortunately, doctors have made progress in preventing early-onset Group B strep infection in newborns. According to a new study by the Centers for Disease Control and Prevention, the number of babies who developed early-onset GBS dropped 65 percent between 1993 and 1998.
Your doctor will use one of two approaches to prevent Group B strep infections.
The first strategy involves screening expectant mothers for GBS during the last weeks of pregnancy. If you test positive for GBS, you will be treated with intravenous antibiotics -- usually penicillin, or a related drug called ampicillin -- during delivery. Antibiotic treatment can benefit mother as well as baby. A recent study shows that moms get fewer postpartum uterine infections associated with GBS when they're screened and treated for the bacterium before delivery.
Some doctors prefer another approach to treating GBS: bypassing the screening process and using antibiotics to treat only those expectant mothers who have risk factors for passing GBS on to their babies. Risk factors include:
While current methods of prevention can protect most babies from GBS infection, some newborns still get it. Researchers are seeking to develop a vaccine for expectant mothers that could prevent both early- and late-onset infections.
The information on this Web site is designed for educational purposes only. It is not intended to be a substitute for informed medical advice or care. You should not use this information to diagnose or treat any health problems or illnesses without consulting your pediatrician or family doctor. Please consult a doctor with any questions or concerns you might have regarding your or your child's condition.