II. Characteristics
III. Types: Beta-hemolytic Streptococcus (Lancefield Groups)
- Group A Streptococcus (Streptococcus Pyogenes)
- Group B Streptococcus (Streptococcus agalactiae)
- Group C Streptococcus
- Group G Streptococcus
IV. Types: Alpha-hemolytic Streptococcus
- Streptococcus Pneumoniae (Pneumococcus)
- Viridans Streptococcus (Bacterial Endocarditis)
V. Types: Non-hemolytic Streptococcus
- Streptococcus faecalis (Group D)
- Certain members of Groups B, C, D, H, and O