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Gemella morbillorum
''Gemella morbillorum'' is a species of bacteria within the genus ''Gemella''. It is an aerobic Gram positive coccus usually preferring capnophilic or microaerophilic environements. From its discovery in 1917 (by R. Tunnicliff) until 1988, it was known as ''Streptococcus morbillorum'' (and briefly as ''Peptostreptococcus morbillorum'' ). The name change followed closer examination with DNA filter hybridization (by Kilpper-Balz and Schleifer) which found it was very close to the species ''Gemella haemolysans''.
==Pathogenicity==
''G. morbillorum'' is rarely a cause of disease in humans, though it may be found benignly in the oropharyngeal area. Infections, when found, are similar to ''viridans Streptococci'' in range. Cases have been reported of endovascular infections (predominantly endocarditis) and also acute invasive infections. It has also been reported as among the most common bacteria present in teeth with cysts that do not resolve after repeated root canal treatments.〔Signoretti FGC, Gomes BPFA, Montagner F, Jacinto RC. Journal of Endodontics 2013;39:1240-1244〕
A report of a human infection involving ''G. morbillorum'' in an Indian child was reported in 1999.〔http://indianpediatrics.net/dec-99/99-dec-12.htm〕
Strains of this species are commonly resistant to penicillin.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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