[Late neonatal sepsis caused by Streptococcus pyogenes].

Currently, the group A Streptococcus is a unusual cause of infection in the neonatal period. The description of cases of severe infection in the newborn is sporadic. We present a 12-days-old newborn attended at the emergency room for fever without focus, which developed neurological and systemic involvement during admission. Clinical presentation, evolution and treatment are described. Blood culture isolation of group A Streptococcus confirmed late sepsis by this bacteria, probably with associated meningitis.