Serogroup B

What is Serogroup B?

Serogroup B is a type of bacteria, which is normally referred to as Streptococcus agalactiae. It is also one of the most common bacterial causes of severe meningitis and sepsis in newborns and can cause meningitis and encephalitis in adults. Serogroup B bacteria can also cause urinary tract infections, pelvic inflammatory disease, and bloodstream infections.

How Common is Serogroup B?

Serogroup B is relatively widespread in the United States, but it does occur more frequently in certain parts of Europe, such as France, the United Kingdom, and Ireland. It is estimated that Serogroup B makes up around 1% to 5% of the Streptococcus bacteria cases nationally, and it is the leading cause of meningitis in newborns.

What are the Symptoms of Serogroup B?

The symptoms of Serogroup B differ depending on the age and health of the person affected. In newborns, the most common symptoms are fever, listlessness, irritability, vomiting, and poor feeding. In adults, serogroup B can lead to meningitis, which is an infection of the lining of the brain and spinal cord, and can cause symptoms such as headache, vomiting, stiff neck, muscle aches, confusion, and sensitivity to light and sound. In addition, urinary tract infections, pelvic inflammatory disease, and bloodstream infections can also be caused by Serogroup B.

How is Serogroup B Diagnosed?

In order to diagnose Serogroup B, your doctor will usually take a sample of fluid from the affected area. This can include a sample of the cerebrospinal fluid from the spinal cord, a blood sample, or a sample from the urinary tract or from genital secretions. The sample is then tested in the laboratory for the presence of the bacteria.

How is Serogroup B Treated?

Serogroup B is usually treated with antibiotics, such as penicillin, ampicillin, vancomycin, and cephalosporins. Treatment should begin as soon as possible and will usually be continued for several weeks. It is important to follow the doctor’s instructions carefully and take all medications as prescribed. Treatment should not be stopped or changed without consulting a doctor.

What Can I Do to Prevent Serogroup B?

The best way to prevent Serogroup B is through vaccination. The vaccine is recommended for all pregnant women, and it is important for both the mother and the baby to get the vaccine. In addition, the vaccine is recommended for anyone who has had contact with someone who has a serogroup B infection.

In addition, good hygiene and sanitation are important in helping to prevent spread of Serogroup B infections. Practising good hand hygiene, such as washing your hands regularly and thoroughly, can help to reduce spread of the bacteria. Hospitals, clinics, and other healthcare settings should ensure good sanitation practices, such as properly cleaning and sterilizing equipment and regularly disinfecting surfaces.


Serogroup B is a type of bacteria that is the leading cause of meningitis in newborns and can also cause a range of other infections in newborns, adults, and the elderly. It is important to get vaccinated if you have had contact with someone who has Serogroup B, and all pregnant women should be vaccinated. Furthermore, practice good hand hygiene, as well as ensuring good sanitation practices in healthcare settings, can help to reduce spread.