Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Borrelia
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Borrelia: A group of bacteria that are helical spirochetes of the genus Borrelia. Some species of Borrelia cause relapsing fever in humans and animals. For example, Borrelia burgdorferi causes Lyme disease. Named after Amedee Borrel (1867-1936), French bacteriologist.
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