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Streptococcus agalactiae is the most common human pathogen belonging to group B of the Lancefield classification of streptococci —hence the name of group B stretococcal (GBS). Infection with GBS can cause serious illness and sometimes death, especially in newborns, the elderly, and people with compromised immune systems.
Binomial name. Streptococcus agalactiae. Lehmann and Neumann, 1896. 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. [1][2]
Streptococcus is a genus of gram-positive ... S. agalactiae, or group B streptococcus, GBS, causes pneumonia and meningitis in newborns and the elderly, ...
Lancefield grouping. Lancefield grouping is a system of classification that classifies catalase -negative Gram-positive cocci based on the carbohydrate composition of bacterial antigens found on their cell walls. [1] The system, created by Rebecca Lancefield, was historically used to organize the various members of the family Streptococcaceae ...
CAMP test is shown at bottom left. The CAMP test (Christie–Atkins–Munch-Peterson) is a test to identify group B β-hemolytic streptococci (Streptococcus agalactiae) [1][2] based on their formation of a substance, CAMP factor, [3] that enlarges the area of hemolysis formed by the β- hemolysin elaborated from Staphylococcus aureus.
Streptococcus equinus Andrewes and Horder 1906. Streptococcus bovis is a group of strains of Gram-positive bacteria, originally described as a species, [5][6] that in humans is associated with urinary tract infections, endocarditis, sepsis, [7] and colorectal cancer. [8] S. bovis is commonly found in the alimentary tract of cattle, sheep, and ...
Group B streptococcus is an important cause of bacteremia in neonates, often immediately following birth. [17] Viridans streptococci species are normal bacterial flora of the mouth. Viridans strep can cause temporary bacteremia after eating, toothbrushing, or flossing. [17]
Group B strep is an infection that may be passed to an infant during birth. Vaginal screening for GBS is performed between 34 and 37 weeks of gestational age, so that mothers that are positive for the bacterium can receive treatment before delivery.