Jump to
Group B strep
Group B streptococcus, known as group B strep, is one of many kinds of streptococcus bacteria that infect humans. Group B strep can live in a healthy person's body without causing illness. But it can be life-threatening.
People who are at risk for severe group B strep infection include newborns who catch it from their mothers during childbirth and people who have weakened immune systems (as from chronic illness or cancer treatment).
Group B strep is treated with antibiotics. Testing for group B strep is done during pregnancy. To prevent newborn infection, anyone with group B strep infection is treated in the last weeks of pregnancy or during labor.
©2011-2025 Healthwise, Incorporated
The content above contains general health information provided by Healthwise, Incorporated, and reviewed by its medical experts. This content should not replace the advice of your healthcare provider. Not all treatments or services described are offered as services by us. For recommended treatments, please consult your healthcare provider.