Medically reviewed by Benjamin F. Asher, MD Strep throat is a highly contagious infection caused by group A Streptococcus bacteria (Streptococcus pyogenes), common in children but affecting adults too ...

These yellow spheres are Streptococcus pyogenese bacteria bound to a human neutrophil – a key part of the immune system. Streptococcus pyogenese is the bacterium that causes strep throat in humans.

There are three types of impetigo based on the bacteria that cause them and the sores that form. Each type goes through a series of stages. Strains of Staphylococcus (staph) or Streptococcus ...

A new study suggests that a common bacteria found in the mouth and gut, Streptococcus anginosus, may be linked to a higher ...