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viridans streptococcus

感染症

viridans streptococcus 

Any of a group of streptococci with no defined Lancefield group antigens

but not Streptococcus pneumoniae.

☆usually α-hemolytic; part of the normal flora of the respiratory tract

but also causing dental caries, bacterial endocarditis,

and other disorders in immunocompromised hosts.

(S. viridans と呼ばれたのは、Mitis, Anginosus, Mutans, Salivarius groupのα溶血菌)