Staphylococcus haemolyticus (S. haemolyticus) constitutes the main part of the human skin microbiota. It is widespread in hospitals and among medical staff, resulting in being an emerging microbe causing nosocomial infections.

β-hemolytic streptococci (BHS) are a leading cause of invasive bacterial disease worldwide. They are subtyped based on the presence of the surface polysaccharide antigens and include Group A Streptococcus (GAS; Streptococcus pyogenes), Group B Streptococcus (GBS; Streptococcus agalactiae), and non-group A, non-group B Streptococci (NABS).

Streptococci are gram-positive aerobic organisms that cause many disorders, including pharyngitis, pneumonia, wound and skin infections, sepsis, and endocarditis. Symptoms vary with the organ infected. Sequelae of infections due to group A beta-hemolytic streptococci may include rheumatic fever and glomerulonephritis.

Because of the comparatively high incidence of Str. haemolyticus bacteremia and the clinical importance of such infections of the blood stream, we felt that a comprehensive study of these cases would be both interesting and valuable.

In clinical bacteriology, members of Streptococcus are divided into three categories based on their ability to induce hemolysis: α-hemolytic Streptococcus (also known as Streptococcus viridans), β-hemolytic Streptococcus, and γ-hemolytic Streptococcus (also known as …

Aug 3, 2016 · Group A streptococci: cause complete hemolysis/lysis of red cells in blood agar media around/under colonies caused by streptolysin (exotoxin), so called β-hemolysis. See separate module for details on this organism.

Staphylococcus haemolyticus is a member of the coagulase-negative staphylococci (CoNS). [2] It is part of the skin flora of humans, [3] and its largest populations are usually found at the axillae, perineum, and inguinal areas. [4] S. haemolyticus also …

Those known to cause human disease comprise two broad categories: First are the pyogenic streptococci, including the familiar β-hemolytic streptococci and the pneumococcus. These organisms are not generally part of the normal flora but …

Group A β-hemolytic streptococcus (GABHS, Streptococcus pyogenes) is a common cause of a wide variety of infections in infants, children, and adults.

Purpose of review: Increasing disease caused by beta-haemolytic streptococci indicates the need for improved understanding of pathogenesis. Recent findings: Streptococcus pyogenes, or group A Streptococcus (GAS), causes significant disease worldwide.