This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Blood culture is positive in which infection of Staphylococcus aureus is 
Select and explain. 
A. TSS, B. SSSS, C. Infective endocarditis, D. Impetigo
C: Infective endocarditis
Answer: C: Infective endocarditis 
Explanation: Infections caused by methicillin-sensitive S aureus, high-magnitude bacteremia (defined as >4 positive blood cultures ), and endocarditis. The most impoant test is a blood culture used to identify bacteria in the bloodstream. REFERENCE: www.mayoclinic.org