Necrotizing fasciitis following primary peritonitis caused by Streptococcus pyogenes with covS mutation in a healthy woman: a case report.

Background: Primary peritonitis due to Streptococcus pyogenes (S. pyogenes) is uncommon in patients without comorbid conditions such as immunosuppression, nephritic disease, or liver cirrhosis. Furthermore, it does not cause another infection at the same time in a healthy person.