Microbiology Bacteria most commonly involved in prosthetic valvular hea disease within 2 months of surgery is: March 2007 A Staphylococcus epidermidis B Enterococci C Streptococcus viridans D Hemophilus 💡 Explanation Bacteria most commonly involved in prosthetic valvular hea disease within 2 months of surgery is: March 2007 ✓ Correct Answer: A. Staphylococcus epidermidis