What Is Strep B in Humans?

Bacterial infections constantly threaten the human body, but luckily our immune systems can handle a variety of invaders. Those with weak or untested immune systems, however, are vulnerable to infection by a bacterial species known as Strep B.

Strep B Bacteria

• Group B strep bacteria are members of the Streptococcus genus of gram-positive bacteria. These species of Streptococcus are differentiated from group A strep by their cell membranes.

Newborns

• Because group B strep bacteria are common inhabitants of the vaginal canal, newborns are susceptible to infections, which can lead to meningitis, pneumonia, blood contamination and other life-threatening conditions.

Pregnancy Considerations

• Around the 35th week of pregnancy, it is common for gynecologists to swab the vagina for the presence of group B strep bacteria. If these are found, antibiotics will need to be administered during labor to minimize the risk of infecting the newborn as it passes through the birth canal.

Adults

• Many cases of group B strep infection in adults present as simple urinary tract infections. However, the infection can quickly turn deadly if the bacteria enter the bloodstream or cause meningitis.

Other Considerations

• The Centers for Disease Control and Prevention states that certain medical conditions make group B strep infections more likely. These include liver disease, cancer and diabetes. Also, those who are bedridden are more likely to develop an infection.