An infected intravenous (IV)catheter tip grew out gram-positive cocci,which were catalase positive and coagulase negative.The zone size of the novobiocin disk measured 18 mm.The most likely organism causing infection is:
A)S.saprophyticus.
B)S.epidermidis.
C)S.hominis.
D)S.cohnii.

Question

Quizplus · Accepted Answer

Resistance is indicated by an inhibition zone diameter of less than 10 mm.Only S.epidermidis is novobiocin sensitive.

An Infected Intravenous (IV)catheter Tip Grew Out Gram-Positive Cocci,which Were