Species | Circumstances | Disorders |
---|---|---|
Group A | ||
Streptococcus pyogenes | Ears, nose, and throat | Middle ear infection ( otitis media Otitis Media (Acute) Sore throat ( pharyngitis Throat Infection |
Skin | Cellulitis Cellulitis Erysipelas Erysipelas Impetigo Impetigo and Ecthyma Wound infections | |
Other | Infection of heart valves ( endocarditis Infective Endocarditis Pleurisy Scarlet fever (no longer common) | |
Disorders that develop after streptococcal infections | Glomerulonephritis Glomerulonephritis (kidney inflammation) | |
Group B | ||
Streptococcus agalactiae | In adults, especially those with diabetes mellitus | Abscesses Cellulitis Wound infections |
In newborns | ||
In women after delivery of a baby | Bloodstream infections Infection of the uterus ( endometritis Infections of the Uterus After Delivery ) | |
Viridans | ||
Various species | — | Infection of heart valves (endocarditis) that have been damaged by a disorder such as a congenital heart disorder or rheumatic fever |