P ED KEY FACT | Viruses account for the majority of cases of pharyngitis. Group A Streptococcus is responsible for fewer than 10% of cases.

KEY FACT | Viruses account for the majority of cases of pharyngitis. Group A Streptococcus is responsible for fewer than 10% of cases.


KEY FACT | The presence of all four Centor criteria confers a risk of Group A Streptococcus pharyngitis of 56%


KEY FACT | Corticosteroids improve severe throat pain and shorten the clinical course of GAS pharyngitis