Strep throat is caused by which of the following organisms?

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Streptococcus pyogenes is commonly known as the group A streptococcus bacteria and is the most common cause of strep throat. Streptococcus pneumoniae (B) can cause pneumonia but is not a common cause of strep throat. Streptococcus agalactiae (C) can cause infections in newborns but is not a common cause of strep throat. Streptococcus faecalis (D) can cause infections in the urinary tract and bloodstream but is not a common cause of strep throat.

Strep Throat Is Caused by Which of the Following Organisms