Surveillance to investigate the wildlife-vector transmission cycle of the human pathogen Borrelia miyamotoi in California, USA, revealed infections in dusky-footed woodrats, brush mice, and California mice. Phylogenetic analyses suggest a single, well-supported clade of B. miyamotoi is circulating in California.
Keywords: Borrelia; Borrelia miyamotoi ecology; California; Peromyscus; United States; bacteria; mammals; tick-borne disease; vector-borne infections; zoonoses.