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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Blood culture is positive in which infection of Staphylococcus aureus
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The correct answer is  Infections caused by methicillin-sensitive S aureus, high-magnitude bacteremia (defined as >4 positive blood cultures ), and endocarditis.
The most important test is a blood culture used to identify bacteria in the bloodstream.