Group C and group G streptococcus: guidance, data and analysis

The characteristics, diagnosis, management, and epidemiology of group C streptococci and group G streptococci.

Group C and group G streptococci include several species of bacteria, with the main human pathogen being Streptococcus dysgalactiae ssp. equisimilis. These bacteria usually cause throat, skin and soft tissue infections.

Group C and group G streptococci can also cause invasive infections like:

  • bacteraemia
  • endocarditis (inflammation of the lining of the heart)
  • bone and joint infections

Toxic shock can follow both localised and invasive infections.

Group C and G streptococcal infections are spread by person to person contact, such as sneezing, coughing, or touching an open wound.

Group C and G streptococcal infections may be treated with antibiotics.


PHE publishes reports on streptococcal infection rates in Health Protection Report (HPR).

For reports from 2013 and earlier, see the HPR archive.

Diagnosis and treatment

In the absence of specific Group C and G streptococcal guidance see guidance about group A streptococcal infections treatment.

Published 15 November 2013
Last updated 14 July 2021 + show all updates
  1. Updated link under Diagnosis to AMRHAI, which now provides diagnostic services.

  2. First published.