A 23 year old patient had fever since 2 weeks presents with mitral valve vegetation. Patient is a intravenous drug abuser. Most common cause of endocarditis in this patient is :: (A) S.aureus, (B) S.epidermidis, (C) Enterococcus, (D) Viridans Streptococci
Answer is C. i.v. drug abusers

Lt. sided endocarditis – Enterococcus
Rt. sided endocarditis – S.aureus