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Bacterium

Streptococcus agalactiae

Group B beta-hemolytic streptococcus

STREP-toh-KOK-us ah-gah-LAK-tee-eye

Gram positivebacteriagram-positivecoccichainsgroup-bcamp

High-yield clue

Group B + beta-hemolysis + CAMP positivity is the core study anchor.

Overview

A Group B streptococcus used to connect beta-hemolysis, CAMP-test vocabulary, and neonatal coursework associations.

Classification

  • Gram-positive
  • Cocci
  • Chains
  • Group B Streptococcus

Lab & identification clues

  • Catalase negative
  • Beta-hemolysis
  • CAMP-test vocabulary

Associations

  • Neonatal infection vocabulary
  • Pregnancy screening vocabulary
  • Strep comparison drills

Commonly confused with

  • Streptococcus pyogenes
  • Enterococcus faecalis/faecium

Frequently asked questions

What is Streptococcus agalactiae?

A Group B streptococcus used to connect beta-hemolysis, CAMP-test vocabulary, and neonatal coursework associations.

What is the Gram stain of Streptococcus agalactiae?

Streptococcus agalactiae is Gram positive.

What are the lab clues for Streptococcus agalactiae?

Lab clues for Streptococcus agalactiae include Catalase negative, Beta-hemolysis, and CAMP-test vocabulary.

What is Streptococcus agalactiae commonly confused with?

Streptococcus agalactiae is commonly confused with Streptococcus pyogenes and Enterococcus faecalis/faecium.

Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.

OpenStax: Microbiology 2e organism classification foundations - sourceNCBI Bookshelf: Medical Microbiology organism chapters - sourceCDC: CDC disease and public-health topic pages - source