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Questions and Answers
Which bacterial species is most commonly associated with cystitis in patients?
Which bacterial species is most commonly associated with cystitis in patients?
- Enterococcus faecalis
- S saprophyticus (correct)
- Escherichia coli
- S aureus
What is the main mechanism by which most S aureus strains are resistant to conventional penicillin?
What is the main mechanism by which most S aureus strains are resistant to conventional penicillin?
- Increased efflux pump activity
- Synthesis of penicillinase enzyme (correct)
- Production of penicillin-binding proteins
- Reduced membrane permeability
Which gene is responsible for conferring methicillin resistance in S aureus?
Which gene is responsible for conferring methicillin resistance in S aureus?
- MecA (correct)
- Beta-lactamase
- PenA
- VanA
What percentage of healthcare-associated infections caused by S aureus in the United States are due to MRSA?
What percentage of healthcare-associated infections caused by S aureus in the United States are due to MRSA?
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Which bacteria transferred the vanA gene to VRSA strains, contributing to their vancomycin resistance?
Which bacteria transferred the vanA gene to VRSA strains, contributing to their vancomycin resistance?
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