Strep throat epidemiology and demographics

GAS pharyngitis is the most common bacterial cause of pharyngitis.^[1] Worldwide, the incidence of group A stretococcal pharyngitis (GAS) is estimated to be above 616 million cases annually.^[2] It commonly affects children aged 5-15 years and is rare in children age less than 3 years.^[3] GAS pharyngitis is common in winter and early spring season.^[3]

• GAS pharyngitis is the most common bacterial cause of pharyngitis.^[1]
  • Worldwide, the incidence of group A stretococcal pharyngitis (GAS) is estimated to be above 616 million cases annually.^[2][3]
  • It accounts for 20-30% cases of acute bacterial pharyngitis in children and 5-15% in adults.^[3][1]
  • The CDC does not track the incidence of GAS pharyngitis.^[3]

The following demographic factors may affect the incidence and prevalence of GAS pharyngitis.^[3]

Group A streptococcal pharyngitis commonly affects children aged 5-15 years and is rare in children aged less than 3 years.^[3]

Men and women are affected equally by Group A streptococcal pharyngitis.^[3]

There is no racial predilection to Group A streptococcal pharyngitis.^[3]

GAS pharyngitis is common in winter and early spring.^[3]

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