2021年9月21日 · Group B strep (streptococcus) is a common bacterium often carried in the intestines or lower genital tract. The bacterium is usually harmless in healthy adults. In newborns, however, it can cause a serious illness known as group B strep disease.

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.

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.

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.

2016年8月3日 · 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.

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).

Most streptococci important in skin infections belong to the Lancefield groups A, C and G, and are beta- haemolytic. Streptococci pneumoniae (pneumococci) are bacteria important in pneumonia and meningitis but rarely cause skin disease. Pneumococci are alpha-haemolytic and do not belong to the Lancefield group.

The designations "group C Streptococcus " (GCS) and "group G Streptococcus " (GGS) are used by clinical microbiology laboratories to denote clinical isolates of streptococci that react with Lancefield group C or G typing serum and, like Streptococcus pyogenes (group A Streptococcus), form large colonies on sheep blood agar, typically surrounded ...

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 …

Group A hemolytic streptococcus is also known as a causative bacterium of streptococcal toxic shock syndrome, which causes tissue necrosis (death of tissue) and shock.