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1. A 75 year old man diagnosed of having pneumococcal meningitis is not responding to the...

1. A 75 year old man diagnosed of having pneumococcal meningitis is not responding to the penicillin therapy. Which of the following can be performed on the isolate to best determine this organism's susceptibility?

a. Oxacillin disk diffusion

b. vancomycin resistance test

c. penicillin susceptibility

d. chromogenic cephalosporing beta-lactamase

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Answer #1

The correct answer is option C

Explanation : Penicillin susceptibility when a bacteria has resistance to the particular drug.It gives values with regards to amount of resistance.As in this case penicillin drug therapy was the choice and the resistance was seen rowards this drug the correct answer is option C

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