Streptococcus pyogenes / Group A Strep

Precautions

Standard Precautions
Standard Precautions

General Information

Pathogen information

Gram positive cocci in chains, beta-hemolytic

Epidemiology

Reservoir is human skin and oropharynx/mucous membranes, colonizes 10% in pharynx, more commonly children.

Person-to-person transmission, occasionally foodborne.

Associated syndromes

Exhaustive and fascinating list.

Most common manifestations tonsillopharyngitis ("strep throat") and skin infections (impetigo, erysipelas, cellulitis).

Invasive infections such as bacteremia, endocarditis, necrotizing fasciitis, meningitis, toxic shock syndrome, pneumonia, and other sterile space infections.

Post-infectious immunologically mediated phenomena such as glomerulonephritis and rheumatic fever.

Scarlet fever and others.