Abstract
Argasid ticks can transmit microorganisms to their vertebrate hosts, which include humans. More specifically, some species of anthropophilic Ornithodoros transmit spirochetes of the genus Borrelia, which are the causative agents of Tick-Borne Relapsing Fever (TBRF). In South America, two species of this group were described in the first half of the 20th century. Among them, Borrelia vene…