“Group B streptococcus (also called Group B strep or GBS) is a common type of bacteria (tiny organisms that live in and around your body) that can cause infection. Usually GBS is not serious for adults, but it can hurt newborns.

Many people carry Group B strep bacteria and don’t know it. It may never make you sick. GBS in adults usually doesn’t have any symptoms, but it can cause some minor infections, like a bladder or urinary tract infection (UTI).

While GBS may not be harmful to you, it can be very harmful to your baby. If you’re pregnant, you can pass it to your baby during labor and childbirth.

About 10 to 30 percent of pregnant women carry GBS bacteria. The best way to know if you have GBS is to get tested.”

March of Dimes (https://www.marchofdimes.org/find-support/topics/planning-baby/group-b-strep-infection)