“…This disease causes, in horses, fever, anemia, jaundice, hepatomegaly and weight loss, leading to a decrease in animal performance, thus causing economic damage to breeders. 6,7 Regarding public health, human infestations by species of Dermacentor nitens are uncommon, however, the presence of pathogenic bacteria such as Rickettsia rickettsii (cause of spotted fever) and Borrelia burgdorferi (cause of Lyme disease in humans) has already been reported in this tick species, with B. burgdorferi being found in species of Dermacentor nitens in the State of Paraná. 8 The methodologies used in the control of mosquitoes that transmit these diseases of health and economic importance are generally chemical, through insecticides and larvicides, but they can also be mediated by mechanical control, where the main activities involve the protection, destruction or proper destination of breeding sites; reservoir drainage; as well as installation of screens on doors and windows.…”