Cultures taken from an impetigo lesion reveal bacteria that are Gram-positive cocci which are catalase- and coagulase-negative and cause beta-hemolysis when cultured on blood agar. The responsible species is

A) Staphylococcus aureus.
B) staphylococci species other than Staphylococcus aureus.
C) Streptococcus pyogenes.
D) Pseudomonas aeruginosa.
E) Clostridium perfringens.


Answer: C

Biology & Microbiology

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