What is the most common bacteria that causes pharyngitis (sore throat)?

Updated: May 06, 2020
  • Author: John R Acerra, MD; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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Answer

The most significant bacterial agent causing pharyngitis in both adults and children is GAS infection (Streptococcus pyogenes); this is shown in the image below.


Streptococcus pyogenes at 100X magnification. Streptococcus pyogenes at 100X magnification.

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