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Group B streptococcal infection, also known as Group B streptococcal disease or just Group B strep infection, is the infectious disease caused by the bacterium Streptococcus agalactiae. Streptococcus agalactiae is the most common human pathogen belonging to group B of the Lancefield classification of streptococci —hence the name of group B ...
Streptococcus agalactiae (also known as group B streptococcus or GBS) is a gram-positive coccus (round bacterium) with a tendency to form chains (as reflected by the genus name Streptococcus). It is a beta- hemolytic , catalase -negative, and facultative anaerobe .
It was a retrospective study (2008–2010) and looked at 441 children who attended a Belgian hospital emergency department and had a throat swab taken. It concluded that the Centor criteria are ineffective in predicting the presence of Group A beta-haemolytic streptococcus (i.e. antibiotic treatment-worthy) on throat swab cultures in children. [4]
^Hafner E, Sterniste W, Rosen A, et al. Group B streptococci during pregnancy: a comparison of two screening and treatment protocols. Am J Obstet Gynecol 1998; 179:677--81.; ^ Antimicrobial prevention of early-onset group B streptococcal sepsis: estimates of risk reduction based on a critical literature review Benitz WE, Gould JB, Druzin ML. Pediatrics 1999;103:e78.; External links. Prevention ...
Similarly, group B streptococcus typically denotes Streptococcus agalactiae, although minor beta-hemolytic group B streptococci like S. troglodytidis exist. [15] While most streptococcal illnesses in humans originate from species adapted to humans, such as S. pneumoniae or S. pyogenes, there are zoonotic species capable of causing infections. [15]
Those meeting these criteria likely do not require a lumbar puncture, and are felt to be safe for discharge home without antibiotic treatment, or with a single dose of intramuscular antibiotics, but will still require close outpatient follow-up. [citation needed] One risk for Group B streptococcal infection (GBS) is preterm rupture of membranes ...
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In the medical setting, the most important groups are the alpha-hemolytic streptococci S. pneumoniae and Streptococcus viridans groups, and the beta-hemolytic streptococci of Lancefield groups A and B (also known as "group A strep" and "group B strep"). Table: Medically relevant streptococci [10]