Bacterium
viridans streptococci
Subclass of:
Streptococcus
Definitions related to streptococcus viridans group:
  • (viridans streptococci) A large heterogeneous group of mostly alpha-hemolytic streptococci. They colonize the respiratory tract at birth and generally have a low degree of pathogenicity. This group of species includes STREPTOCOCCUS MITIS; STREPTOCOCCUS MUTANS; STREPTOCOCCUS ORALIS; STREPTOCOCCUS SANGUIS; STREPTOCOCCUS SOBRINUS; and the STREPTOCOCCUS MILLERI GROUP. The latter are often beta-hemolytic and commonly produce invasive pyogenic infections including brain and abdominal abscesses.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • A non taxonomic grouping of species within the Streptococcus genus that are alpha hemolytic and do not express Lancefield antigens.
    NCI
    U.S. National Cancer Institute, 2021
  • A non-taxonomic grouping of species within the Streptococcus genus that are alpha-hemolytic and do not express Lancefield antigens.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
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