Trypanosomosis is a protozoal infection which can occur in dogs in many parts of the world. The disease is caused by protozoa of the genus Trypanosoma, which are transmitted by tabanids, stable flies, tsetse flies and triatomid bugs, depending on the species involved. The disease in dogs can be chronic or acute with multiple bleeding, oedema, circular and respiratory symptoms and is possibly lethal. Besides the veterinary significance, some trypanosomes infecting dogs possess an important zoonotic potential – with the presence of dogs regarded as one of the major risk factors for human infection, as it is the case of Trypanosoma cruzi in the Americas.

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