<prompt> All of the following are TRUE statements about staphylococci, EXCEPT:Toxic shock syndrome may affect both males and femalesMany individuals are nasal carriers of S. aureusImpetigo is caused only by S. aureusS. epidermidis is often responsible for infective endocarditis in intravenous drug abusers  <response>: Impetigo pyoderma, a disease characterized by blister-like multifocal pustules on the face and hands in children and adults, can be caused by Staphylococcus aureus andor beta hemolytic Streptococcus pyogenes, not only by S. aureus. All of the other statements are true. Also Know: Staphylococci form clusters and are catalase-positive. In staphylococcal TSS, the pyrogenic exotoxin TSST-1 is produced during the course of a staphylococcal infection with systemic disease as a result of absorption of toxin from the local site. TSS may be the result of in vivo production of any of the Staph SAgs, with TSST-1 simply the most common offender. Ref :Ray C.G., Ryan K.J. 2010. Chapter 24. Staphylococci. In C.G. Ray, K.J. Ryan Eds, Sherris Medical Microbiology, 5e. 