Rao, MJohn, GGanesh, AJose, JLalitha, M KJohn, L1990-11-012009-05-301990-11-012009-05-301990-11-01Rao M, John G, Ganesh A, Jose J, Lalitha MK, John L. Infective endocarditis due to Streptococcus sanguis I occurring on a normal mitral valve. Journal of the Association of Physicians of India. 1990 Nov; 38(11): 866-8http://imsear.searo.who.int/handle/123456789/85582We report a 64 year old lady in whom infective endocarditis of the mitral valve occurred with no previous underlying heart disease. Streptococcus sanguis I was isolated on blood culture and 2-D echo cardiography showed a vegetation on the anterior mitral leaflet. The viridans group of streptococci are classically associated with subacute endocarditis occurring on structurally abnormal valves, but involvement of a normal valve by these organisms is rare.engEchocardiographyEndocarditis, Bacterial --diagnosisFemaleHumansMiddle AgedMitral Valve --microbiologyStreptococcal Infections --diagnosisStreptococcus sanguis --isolation & purificationCase Reports