Group B Streptococcus

E902870

Gram-positive coccus bacterial species beta-hemolytic Streptococcus human pathogen

Group B Streptococcus is a type of bacteria commonly found in the gastrointestinal and genital tracts that can cause serious infections in newborns, pregnant women, and adults with weakened immune systems.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
Streptococcus agalactiae	2
Group B Streptococcus canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T11074035 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Group B Streptococcus
Context triple: [Cepheid, developsTestFor, Group B Streptococcus]

A. Escherichia coli
Escherichia coli is a widely studied, rod-shaped bacterium commonly found in the intestines of warm-blooded animals and extensively used as a model organism in microbiology and genetics.
B. Bacillus
Bacillus is a genus of rod-shaped, endospore-forming bacteria that includes both harmless environmental species and notable pathogens such as Bacillus anthracis.
C. Bacillus anthracis
Bacillus anthracis is a Gram-positive, spore-forming bacterium that causes the disease anthrax in humans and animals.
D. Yersinia
Yersinia is a genus of Gram-negative bacteria that includes several pathogenic species, most notably Yersinia pestis, the causative agent of plague.
E. Helicobacter
Helicobacter is a genus of spiral-shaped, microaerophilic bacteria best known for species such as H. pylori, which colonize the human stomach and are associated with peptic ulcers and gastric cancer.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Group B Streptococcus
Target entity description: Group B Streptococcus is a type of bacteria commonly found in the gastrointestinal and genital tracts that can cause serious infections in newborns, pregnant women, and adults with weakened immune systems.

A. Escherichia coli
Escherichia coli is a widely studied, rod-shaped bacterium commonly found in the intestines of warm-blooded animals and extensively used as a model organism in microbiology and genetics.
B. Bacillus
Bacillus is a genus of rod-shaped, endospore-forming bacteria that includes both harmless environmental species and notable pathogens such as Bacillus anthracis.
C. Bacillus anthracis
Bacillus anthracis is a Gram-positive, spore-forming bacterium that causes the disease anthrax in humans and animals.
D. Yersinia
Yersinia is a genus of Gram-negative bacteria that includes several pathogenic species, most notably Yersinia pestis, the causative agent of plague.
E. Helicobacter
Helicobacter is a genus of spiral-shaped, microaerophilic bacteria best known for species such as H. pylori, which colonize the human stomach and are associated with peptic ulcers and gastric cancer.
F. None of above. chosen

Statements (63)

Predicate	Object
instanceOf	Gram-positive coccus ⓘ bacterial species ⓘ beta-hemolytic Streptococcus ⓘ human pathogen ⓘ
abbreviation	GBS ⓘ
alsoKnownAs	Streptococcus agalactiae ⓘ linked to: Group B Streptococcus
alternativeTreatment	cefazolin ⓘ clindamycin ⓘ vancomycin ⓘ
capsule	encapsulated ⓘ
catalaseActivity	catalase-negative ⓘ
causesDisease	adult meningitis ⓘ bacteremia in adults ⓘ cellulitis ⓘ chorioamnionitis ⓘ early-onset neonatal sepsis ⓘ late-onset neonatal sepsis ⓘ neonatal meningitis ⓘ neonatal pneumonia ⓘ osteomyelitis ⓘ postpartum endometritis ⓘ septic arthritis ⓘ urinary tract infection in pregnancy ⓘ
cellArrangement	chains ⓘ
cellMorphology	coccus ⓘ
colonizationRateInPregnancy	approximately 10–30 percent of pregnant women ⓘ
colonizes	rectum ⓘ vagina ⓘ
diagnosisMethod	blood culture ⓘ cerebrospinal fluid culture ⓘ culture from vaginal and rectal swabs ⓘ
domain	Bacteria ⓘ
family	Streptococcaceae ⓘ linked to: Streptococcus
firstLineTreatment	ampicillin ⓘ penicillin G ⓘ
genus	Streptococcus ⓘ
gramStain	Gram-positive ⓘ
hemolysisType	beta-hemolytic ⓘ
LancefieldGroup	group B ⓘ
majorVirulenceFactor	beta-hemolysin ⓘ polysaccharide capsule ⓘ surface proteins ⓘ
naturalHabitat	human gastrointestinal tract ⓘ human genital tract ⓘ
order	Lactobacillales ⓘ
oxygenRequirement	facultative anaerobe ⓘ
preventionMethod	intrapartum antibiotic prophylaxis ⓘ
publicHealthImpact	leading cause of neonatal sepsis and meningitis in many countries ⓘ
riskGroup	immunocompromised adults ⓘ newborns ⓘ older adults ⓘ pregnant women ⓘ
screeningRecommendation	universal screening of pregnant women at 35–37 weeks gestation ⓘ
serotypes	II ⓘ III ⓘ Ia ⓘ Ib ⓘ V ⓘ
taxonRank	species ⓘ
transmissionRoute	ascending infection from vagina ⓘ person-to-person contact ⓘ vertical transmission during childbirth ⓘ
vaccineStatus	no licensed vaccine as of 2024 ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Cepheid → developsTestFor → Group B Streptococcus ⓘ

Group B Streptococcus → alsoKnownAs → Streptococcus agalactiae ⓘ

linked to: Group B Streptococcus

Streptococcus → includesSpecies → Streptococcus agalactiae ⓘ