Group A Streptococcal (GAS) Disease

Increase in Invasive Group A Strep Infections, 2022–2023

CDC is looking into an increase in invasive group A strep (iGAS) infections among children in the United States. iGAS infections include necrotizing fasciitis and streptococcal toxic shock syndrome.

What you should do

Bacteria called group A Streptococcus (group A strep) can cause many different infections.

The best way to protect yourself from group A strep infection is to practice good hygiene, like washing your hands often.

Información en español: Estreptococos del Grupo A

Diseases Caused by Group A Strep

Learn about some of these infections, including symptoms, risk factors, treatment options, and how to prevent them.

Strep Throat
Scarlet Fever
Impetigo
Necrotizing Fasciitis
Cellulitis
Streptococcal Toxic Shock Syndrome
Rheumatic Fever
Post-Streptococcal Glomerulonephritis

For Professionals

For Clinicians
For Laboratorians
Surveillance
Publications

Outbreaks

Public Health Response to OutbreaksCDC can assist health departments during GAS outbreaks.
Long-term Care Facilities Outbreaks: Investigation ToolsCDC toolkit for personnel in public health departments and long-term care facilities.

Nurse taking care of mature male patient sitting on wheelchair in hospital