…is the leading cause of aortic stenosis. Rheumatic heart disease is a complication of rheumatic fever, which is caused by streptococcal infections (group A Streptococcus…

…aureus , hemolytic streptococci and pneumococci cause acute endocarditis. Other microorganisms, generally, cause subacute endocarditis. Endocarditis can affect native (own) valves and valve prostheses. As always…