Borrelia afzelii

{{Short description|Species of bacterium}}

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| taxon = Borrelia afzelii

| authority = Manuela Marin Canica et al., 1994

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Borrelia afzelii is a species of Borrelia endemic to parts of Eurasia where it is one of the causative agents of Lyme disease. It is transmitted by hard-bodied ticks of the Ixodes genus (Ixodes ricinus in Europe, and Ixodes persulcatus in temperate regions of Asia), infecting various wild mammals in nature.{{Cite web |title=Dictionnaire médical de l'Académie de Médecine |url=https://www.academie-medecine.fr/le-dictionnaire/index.php?q=Borrelia+garinii |access-date=2024-02-15 |website=www.academie-medecine.fr}}

Among 30 Borrelia known species, it is one of four which are likely to infect humans.{{cn|date=September 2022}} Dermatological manifestations are more common in Lyme disease caused by B. afzelii.

It is named after Swedish dermatologist Arvid Afzelius.{{cn|date=September 2022}}