Unknown Which of the following organism is seen in a patient of left-sided endocarditis involving the mitral valve? A Staphylococcus aureus B Streptococcus viridans C Enterococci D pseudomonas 💡 Explanation Which of the following organism is seen in a patient of left-sided endocarditis involving the mitral valve? ✓ Correct Answer: B. Streptococcus viridans