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Group B Streptococcal Infections

General Information

Group B streptococcal (GBS) disease is caused by the bacterium Streptococcus agalactiae, which can cause illness in newborn babies, pregnant women, the elderly, and people with weakened immune systems.

GBS disease is the most common cause of life-threatening infections in newborns.

Provider Information

This is a Wisconsin disease surveillance category II disease:

Wisconsin case reporting and public health follow-up guidelines

Case Reporting and Investigation Protocol (EpiNet): P-01983 Group B Streptococcal infections (PDF)

Questions about Group B Streptococcal Infections? Contact us!
Phone: 608-267-9003 | Fax: 608-267-9009

Wisconsin Local Health DepartmentsRegional officesTribal agencies

Last revised October 7, 2021