Group A Strep Infection

A computer-generated image of group A Streptococcus based on scanning electron microscopic imagery.

About Group A Strep Infection

These bacteria spread easily and can cause infections like strep throat, impetigo, and cellulitis.
Learn More
A male doctor examines a little girl's throat using a tongue depressor.

Testing for Strep Throat or Scarlet Fever

There's a quick test to see if someone has strep throat or scarlet fever.
A young boy washes his hands with soap and water

Preventing Group A Strep Infection

Take steps to help protect yourself from group A strep infections.

Healthcare Providers

Collage of images representing group A strep bacteria and some of the infections they can cause: strep throat, cellulitis, impetigo, and rheumatic fever.

Healthcare Provider Home

Diagnosis, treatment, and prevention options and clinical features vary for each infection.

Quick Links

Public Health Professionals

An illustration of generic data

Group A Strep Disease Surveillance and Trends

CDC uses two systems to track invasive group A strep infections in the United States.
Nurse taking care of an older male patient sitting in a wheelchair in a long-term care facility

Decision Tool for Investigating Group A Streptococcus Infections in Long-term Care Facilities

CDC tools for investigating group A  Streptococcus  infections in long-term care facilities.

Active Bacterial Core surveillance (ABCs)

Find data, isolates, and resources for ABCs.
Children playing in a pre-school setting.

Public Health Response for Outbreaks

Public health officials investigate group A Streptococcus outbreaks and identify control measures.

CDC's Streptococcus Laboratory