Ixodes
scapularis keeps Lyme Borrelia cycling in nature, says Clark, as do three other Ixodes species on the ground: Ixodes affinis moves among rodents; I. minor moves among rodents and probably birds; and I. dentatus moves among birds and rabbits.
B. burgdorferi clones were tested for their proficiency in the mouse - tick infectious cycle by using naïve RML mice and naïve Ixodes
scapularis larvae from a colony
kept at RML, as described in ref.