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Doença de Lyme símile brasileira 
BYS has now been defined as a vector-borne disease caused by atypical morphological spirochetes at vegetative presentation and transmitted by arthropods not belonging to the. Ixodes ricinus complex, which replicates all the clinical symptoms described in classical LD, with the addition of a high frequency of relapse episodes and autoimmune manifestations. Likely transmission vectors of BYS belong to the Ambyomma and Boophylus genera, and this important difference could explain all the particularities observed in BYS versus Lyme Disease.