alpha-hemolytic streptococci

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Related to alpha-hemolytic streptococci: streptococcal, nonhemolytic streptococcus, Strep pyogenes

α-hemolytic strep·to·coc·ci

streptococci that form a green variety of reduced hemoglobin in the area of the colony on a blood agar medium.
See also: Streptococcus viridans.

α-hemolytic streptococci

Streptococci that, when grown on blood-agar, produce a zone of partial hemolysis around each colony and often impart a greenish appearance to the agar. Included are S. pneumoniae and viridans group streptococci.
See also: streptococcus
References in periodicals archive ?
Wills and Vernon, 1981 (1) Bacteroides melaninogenicus; Stenotrophomonas maltophilla; alpha-hemolytic streptococci 2.
Coagulase-negative staphylococci were the most common pathogens (31% of all isolates), followed by H influenzae (25%), Streptococcus pneumoniae (12%), Moraxella catarrhalis (10%), Pseudomonas aeruginosa (7%), alpha-hemolytic streptococci (5%), and Staphylococcus aureus (3%).