Microorganisms Responsible for Infective Endocarditis Native valves: - Streptococcus viridans - Enterococci - Other streptococci - Staphylococcus aureus - Staphylococcus epidermidis - Gram-negative bacilli - Fungi (Candida, Aspergillus, Histoplasma) - Culture negative bacilli In Narcotic Addicts: - Staphylococcus aureus - Staphylococcus epidermidis - Streptococci - Enterococci - Gram-negative bacilli - Fungi - Diphtheroids Prosthetic valves: - Staphylococcus epidermidis - Streptococcus viridans - Staphylococcus aureus - Enterococci - Other streptococci - Culture negative #Infective #Endocarditis #Bacteria #Pathogens #Diagnosis #Differential #InfectiousDiseases #Incidence