Describe the Lancefield group, type of hemolysis, and key diagnostic features for the following:
Streptococcus pyogenes
Lancefield group A, β-hemolytic, bacitracin sensitive
Streptococcus agalactiae
Lancefield group B, α-hemolytic, bacitracin resistant
Enterococcus faecalis and Enterococcus faeciu
Lancefield group D, α- or (3-hemolytic, growth in 6.5% NaCl
Streptococcus bovis
Lancefield group D, α-hemolytic, no growth in 6.5% NaCl
Streptococcus pneumoniae
No Lancefield group, α-hemolytic, bile soluble, inhibited by optochin
Viridans group streptococci
No Lancefield group, α-hemolytic, not bile soluble, not inhibited by optochin
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Bacteriology
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