Early detection of Streptococcus pyogenes is by?: (A) Bacitracin, (B) Oxaciliicin, (C) Methidllin, (D) Optochin
Answer is A. ANSWER: (A) BacitracinREF: Jawetz Microbiology, 24th Ed, Ch. 15See previous questionStreptococcus pyogenes are PYR-positive (hydrolysis of L-pyrrolidonyl-2-naphthylamide) and usually are susceptible to bacitracin.