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 ?
Colonisation of the urinary tract by group B streptococci has also been found to be associated with preterm labour.
On an average, 10% of all women will reveal group B streptococci colonisation of genitourinary tract at the time of delivery.
On an average, 10-30% of woman of childbearing age will reveal group B streptococci colonisation of genitourinary tract.
Studies showing association between group B streptococci and preterm premature rupture of membranes.
Unless the mother is grossly neglected, maternal mortality should not occur due to preterm premature rupture of membranes and group B streptococci.
Genetic relatedness between group B streptococci originating from bovine mastitis and a human group B streptococcus type V cluster displaying an identical pulsed-field gel electrophoresis pattern.
Molecular epidemiology and distribution of serotypes, surface proteins, and antibiotic resistance among group B streptococci in Italy.
Group B streptococci causing neonatal infections in Barcelona are a stable clonal population: 18-year surveillance.
Predominance of sequence type 1 group with serotype VI among group B streptococci with reduced penicillin susceptibility identified in Japan.
Molecular epidemiology of macrolide resistance in neonatal bloodstream isolates of group B streptococci.