Group A Streptococcus (GAS) or Streptococcus pyogenes is a bacterium commonly found in the throat and on the skin. Many people can carry this bacterium without any symptoms of disease. The majority of group A streptococcal diseases are relatively mild illnesses, such as streptococcal pharyngitis ("strep throat") or impetigo. However, occasionally these bacteria can cause potentially life-threatening "invasive" infections. Invasive infection occurs when group A Streptococci invade parts of the body where bacteria are not normally present, including the blood and soft tissues such as muscle or fat.
- Impetigo fact sheet, P-42062 (PDF)
- Group A streptococcal infections (GAS) CDC
- Streptococcal pharyngitis (Strep throat) fact sheet, P-42092 (PDF)
- Toxic shock syndrome (TSS) fact sheet, P-42096 (PDF)
- Centers for Disease Control and Prevention website (CDC)
- CDC Active Bacterial Core surveillance (ABCs) Program
This is a Wisconsin disease surveillance category II disease:
- Report to the patient's local public health department electronically, through the Wisconsin Electronic Disease Surveillance System (WEDSS), by mail or fax using an Acute and Communicable Disease case report, F-44151 (Word) or by other means within 72 hours upon recognition of a case.
- Information on communicable disease reporting
Wisconsin case reporting and public health follow-up guidance
Case Reporting and Investigation Protocol (EpiNet): P-01982 Group A Streptococcal infections (PDF)