What Is Strep A Infection?

A microbiologist at the Max-Planck-Institute for Infection Biology prepares a bacterial colony of the strain Streptococcus pyogenes on a blood agar plate.
Photographer: Wolfgang Kumm/picture alliance/Getty ImagesA microbiologist at the Max-Planck-Institute for Infection Biology prepares a bacterial colony of the strain Streptococcus pyogenes on a blood agar plate.
Photographer: Wolfgang Kumm/picture alliance/Getty Images