Histopathology of tick-bite lesions in naturally infested capybaras (Hydrochoerus hydrochaeris) in Brazil.

In the present work features of tick-bite lesions were evaluated in capybaras naturally infested with Amblyomma cajennense and Amblyomma dubitatum ticks. Gross appearance of tick bite site was characterized by a mild swelling and erythema. Microscopic examination revealed the cement cone, a tube-like homogenous eosinophilic mass penetrating deep into the dermis.

Serologic prevalence of Dirofilaria immitis, Ehrlichia canis, and Borrelia burgdorferi infections in Brazil.

Dogs infected with Dirofilaria immitis, Ehrlichia canis, or Borrelia burgdorferi may show nonspecific clinical signs or may be asymptomatic. In Brazil, E. canis and D.