Spirochaetes

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BACTERIA



Overview

  • Two families exist, Leptospiraceae and Spirochaetaceae
  • Leptospiraceae include the pathogens of the genus Leptospira
  • Spirochaetaceae include the pathogens of the genera Borrelia, Brachyspira and Treponema
  • Many cause zoonotic infections


Characteristics

  • Spiral or helical Gram-negative bacteria
  • Motile organisms via endoflagella
  • Poor survival in the environment and sensitive to dessication
  • Stain poorly with Gram stain
  • Most require specialised media for growth
  • Serology required for identification

Brachyspira hyodysenteriae

Leptospira