Vaginitis caused by nutritionally variantStreptococcus pyogenes

Abstract

A nutritionally variant Streptococcus pyogenes was isolated from a vaginal specimen. The organism was isolated in essentially pure culture with a few colonies of normal vaginal flora. The bacterium was identified as Streptococcus pyogenes with the use of rapid test kits and the presence of group A antigen.

Nutritionally variant streptococci

“…Both species have the following characteristics in common: they are resistant to optochin but susceptible to vancomycin; pyrrolidonyl arylamidase and leucine aminopeptidase are produced, but alkaline phosphatase is not produced; hippurate and arginine The nutritionally variant group A strains that have been described appear to be variants of S. pyogenes rather than typical NVS. These isolates (14,35,45) were beta-hemolytic, and some were typeable with M and T antisera, suggesting a close relationship to S. pyogenes. A group A NVS strain was recently found to be chromophore negative, unlike typical NVS (57).…”

Nutritionally variant streptococci.

“…The nutritionally variant group A strains that have been described appear to be variants of S. pyogenes rather than typical NVS. These isolates (14,35,45) were beta-hemolytic, and some were typeable with M and T antisera, suggesting a close relationship to S. pyogenes. A group A NVS strain was recently found to be chromophore negative, unlike typical NVS (57).…”