Risk Factors for Group A Streptococcus Colonization During an Outbreak Among People Experiencing Homelessness in...

Area of Science:

• Epidemiology
• Infectious Diseases
• Public Health

Background:

• Group A Streptococcus (GAS) can cause invasive infections.
• Outbreaks of GAS infections disproportionately affect vulnerable populations.
• Understanding colonization risk factors is crucial for preventing invasive disease.

Purpose of the Study:

• To identify risk factors for any emm type Group A Streptococcus colonization.
• To investigate an invasive emm26.3 GAS outbreak among people experiencing homelessness in Alaska.

Main Methods:

• Case-control study design.
• Data collection on potential risk factors including hygiene and living conditions.
• Statistical analysis to determine significant risk factors.

Main Results:

• Upper extremity skin breakdown was a significant risk factor for GAS colonization.
• Environmental factors such as sleeping outdoors and sharing blankets were associated with increased risk.
• Infrequent tooth brushing also emerged as a notable risk factor.

Conclusions:

• Specific risk factors for GAS colonization in a homeless population were identified.
• Findings can guide targeted interventions to reduce GAS transmission in similar settings.
• Public health strategies should address hygiene and living conditions to mitigate outbreak risks.