Microbiology A patient of Rheumatic heart disease developed infective endocarditis after dental extraction. Most likely organism causing this is: A Streptococcus viridans B S.epidermidis C S.aureus D Pneumococci 💡 Explanation A patient of Rheumatic heart disease developed infective endocarditis after dental extraction. Most likely organism causing this is: ✓ Correct Answer: A. Streptococcus viridans