Gram positive cocci in chains
Reservoir is human skin and oropharynx/mucous membranes.
Exhaustive and fascinating list.
Most common manifestations are:
Tonsillopharyngitis ("Strep throat")
Skin infections (impetigo, erysipelas, cellulitis)
Other invasive infections:
Toxic shock syndrome
Other sterile space infections.
Post-infectious immunologically mediated phenomena such as glomerulonephritis and rheumatic fever.
Contact and droplet precautions for invasive disease for the first 24hrs of antimicrobial therapy or after last debridement, otherwise no precautions.
Post-exposure prophylaxis may be indicated.