[Bacteriologic study of 125 cases of streptococcal infectious endocarditis].

Streptococci remain the bacterial group the most frequently associated with microbial endocarditis. This paper points out the ability of the different species to cause endocarditis. 128 streptococci are isolated from patients with microbial endocarditis (127 from blood cultures, 1 from a valve). Isolates are speciated by biochemical tests and the determination of their group antigen. The viridans streptococci most frequently isolated are S. sanguis I (27 p. cent), S. mitis (16.5 p. cent) and S. sanguis II (9.6 p cent). A comparative survey of the results is rather difficult due to the methodological and taxonomical divergences.