Strep B Infection: Risks & Who is Most Affected

* Newborns: Strep B can cause serious infections in newborns, including pneumonia, meningitis, and sepsis. Newborns are most at risk for strep B infection if their mothers are colonized with the bacteria during pregnancy.

* Pregnant women: Strep B can cause infections in pregnant women, including chorioamnionitis (infection of the placenta and amniotic fluid) and postpartum endometritis (infection of the lining of the uterus).

* People with weakened immune systems: Strep B can cause infections in people with weakened immune systems, such as those with diabetes, HIV/AIDS, or cancer.

* People who have recently had surgery: Strep B can cause infections in people who have recently had surgery, especially if the surgery involved the insertion of a foreign body, such as a pacemaker or artificial joint.

* People who use intravenous drugs: Strep B can cause infections in people who use intravenous drugs, especially if they share needles or other drug paraphernalia.