PetriKey

Bacterium

Borrelia burgdorferi

Tick-borne spirochete

boh-REL-ee-uh burg-DOR-fer-eye

bacteriaspirochetetickbornevectorserology

High-yield clue

Spirochete + Ixodes tick + erythema migrans vocabulary.

Overview

A spirochete used to teach Ixodes tick vocabulary, erythema migrans coursework clues, and two-tier serology concepts.

Classification

  • Spirochete
  • Vector-borne bacterium

Lab & identification clues

  • Serology vocabulary
  • PCR term recognition in selected contexts
  • Spirochete morphology

Associations

  • Lyme disease vocabulary
  • Reservoir/vector ecology concepts
  • Arthritis/neurocardiac association terms

Commonly confused with

  • Treponema pallidum
  • Leptospira interrogans
  • Rickettsia rickettsii

Your notes

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 foundationssourceNCBI Bookshelf: Medical Microbiology organism chapterssourceCDC: CDC disease and public-health topic pagessource