"The Mystery of Lyle and Louise"

This yellow, shiny organism is known to cause wound infections and more famously, toxic shock syndrome.

Grows on dead tissues. Novobiocin resistant (S. epidermidis and S. aureus novobiocin sensitive). 

No Lancefield group shown, alpha hemolysis. Bile solubility test positive, optochin sensitive. Causes pneumonia. 

Isolated from human saliva, sputum, and intestine. No Lancefield group shown, alpha hemolysis.

This organism can be isolated from many human urinary tract infections, as well as polluted water and sewage. It is commonly identified by its distinctive grape-like smell (trimethylamine) or because it can turn the agar light green due to production of a blue pigment (pyocyanin).

Lancefield group A, beta hemolysis. Sensitive to bacitracin. Causes strep throat, rheumatic fever, and scarlet fever.

Isolated from human urinary tract and wound infections, this organism is identifiable by its characteristic putrefactive odor.