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Gram-positive cocci in chains, beta-hemolytic.
Reservoir is human skin and oropharynx/mucous membranes.
Person-to-person transmission.
Occasionally foodborne.
Exhaustive and fascinating list.
Most common manifestations are:
Other invasive infections:
Post-infectious immunologically mediated phenomena such as glomerulonephritis and rheumatic fever
Scarlet fever
Contact and droplet precautions for invasive disease for the first 24 hours of antimicrobial therapy or after last debridement, otherwise no precautions.
Post-exposure prophylaxis may be indicated.