group B streptococci


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group B strep·to·coc·ci

a leading cause of a form of neonatal sepsis that has a 10-20% mortality rate and leaves a large number of survivors with brain damage; also a leading cause of meningitis.

group B streptococci

Streptococci that, when grown on blood-agar, produce complete hemolysis around each colony, indicated by a yellowish zone. Included are S. pyogenes and S. agalactiae.These streptococci are a leading cause of early-onset neonatal infections and late-onset postpartal infections. In women, this is marked by urinary tract infection, chorioamnionitis, postpartum endometritis, bacteremia, and wound infections complicating cesarean section. Eradication of this organism during labor decreases the chances for neonatal sepsis. Performance of cervical-rectal screening cultures at 35 to 37 weeks’ gestation (and intrapartum treatment with penicillin if cultures are positive) prevents the development of neonatal sepsis.
Synonym: ß-hemolytic streptococci
See also: streptococcus
References in periodicals archive ?
Molecular epidemiology and distribution of serotypes, surface proteins, and antibiotic resistance among group B streptococci in Italy.
Bauer TM, Pippert H, Zimmerli w: Vertebral osteomyelitis caused by group B streptococci (Streptococcus agalactiae) secondary to urinary tract infection.
Group B streptococci cause most streptococcal infections in newborns and maternal post-labor/delivery infections.
The recommendations to prevent the infection, from group B streptococci, are likely to lead to treating hundreds of thousands of pregnant women with antibiotics during labor.