16 Invasive Group A Streptococcus

CDC Group A Streptococcus page

184 cases

21 deaths

95.7 % of cases were hospitalized

14.9 cases per 100,000 population


16.1 Epidemiologic Review

16.1.1 Disease Information

Overview: Group A streptococcus (GAS) is a bacterial infection caused by the bacterium Streptococcus pyogenes. The bacteria are usually found in the blood, cerebrospinal fluid (CSF) or body fluids.

Symptoms: Symptoms can vary but common types of invasive disease include bacteremia (infection in the blood), cellulitis (infection of the deep layers of the skin), pneumonia and meningitis (infection in the brain and spinal cord).

Transmission: Transmission occurs between people when a healthy person comes into contact with bodily fluids (blood, respiratory droplets, etc.) of an infected person.

Treatment: GAS is a serious disease that requires treatment with antibiotics as soon as possible.

Prevention There are no specific recommendations for prevention. Practicing good hygiene habits like washing your hands often can help avoid spreading infections. It is also important that people using needles to inject themselves are always using new, clean needles and not reusing or sharing needles.

16.1.2 Demographics


Rates for <1, and 1-4 years of age are not displayed due to low case counts.


Race Rate per 100k
American Indian or Alaska Native, Non Hispanic <5 cases
Asian, Non Hispanic <5 cases
Black or African American, Non Hispanic 20.8
Hispanic or Latino 10.2
Native Hawaiian or Other Pacific Islander, Non Hispanic 34.5
Other Race, Non Hispanic <5 cases
Two or More Races, Non Hispanic <5 cases
Unknown Race and Ethnicity <5 cases
White, Non Hispanic 15.6


Rates for American Indian or Alaska Native, Non Hispanic, Asian, Non Hispanic, Other Race, Non Hispanic, Two or More Races, Non Hispanic, and Unknown Race and Ethnicity are not displayed due to low case counts.


16.1.3 Outbreaks

No outbreaks were identified in 2023.

16.1.4 Monthly and Historical Comparisons




Data for Utah and the CDC were retrieved from the CDC’s Notifiable Infectious Disease Data Tables and were available up until 2020. National data was not available for this disease in the time range at time of report.

16.2 Key Things to Know

  • Most commonly reported symptoms were fever, swelling of an extremity and nausea.
  • 82 cases (45%) were admitted to the ICU, 39 cases (21%) were given vasopressors, and 21 cases (11%) were intubated. These are important indicators of infection severity.
  • 77 cases (42%) had a wound, and 46 cases (25%) reported drug use, and 32 cases (17%) reported experiencing homelessness.
  • Common comorbidities among cases include hypertension (high blood pressure), chronic lung disease, diabetes, and cardiovascular (heart) disease.
  • 157 cases (85%) presented with bacteremia (bacteria found in the blood when it should not be there).