Front | What are some identifying features for Viridans Streptococci? |
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Back | Characteristic: • 30 species, 5 groups • anginosus, mitis, mutans, salivarus, bovis • mostly alpha haemolytic (hence name), some gamma. • commensals - colonize oropharynx, GIT, genitourinary tract • opportunistic infections – sterile sites, immunocompromised All Streptococci: • Gram-positive cocci in chains • Catalase negative • Clear-grey-white, glistening, smooth, round colonies • Fastidious media requirements • Ferments carbohydrate to produce acid (hence LAB) • Facultative anaerobes or capnophiles |
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