Microbiology A patient of RHD developed infective endocarditis after dental extraction. Most likely organism causing this is – A Streptococcus viridans B Streptococcus pneumoniae C Streptococcus pyogenes D Staphylococcus aureus 💡 Explanation A patient of RHD developed infective endocarditis after dental extraction. Most likely organism causing this is - ✓ Correct Answer: A. Streptococcus viridans