beta-hemolytic streptococcus

Streptococci that produce active hemolysins (streptolysin O & S) which cause a clear zone of hemolysis on blood agar media. Classification: - beta-hemolytic streptococci are divided into groups A-O on the basis of cell wall C carbohydrate (Lancefield classification)

Specific

group A beta-hemolytic streptococcus group B beta-hemolytic streptococcus (GBS) group C beta-hemolytic streptococcus group G beta-hemolytic streptococcus Streptococcus milleri (intermedius) group

References

Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 1140