T. evansi
| Trypanosoma evansi | |
|---|---|
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| Trypanosoma evansi in blood | |
| Scientific classification | |
| Domain: | Eukaryota |
| (unranked): | Excavata |
| Phylum: | Euglenozoa |
| Class: | Kinetoplastida |
| Order: | Trypanosomatida |
| Family: | Trypanosomatidae |
| Genus: | Trypanosoma |
| Species: | T. evansi |
| Binomial name | |
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Trypanosoma evansi Steel, 1884 |
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Trypanosoma evansi is a species of excavate trypanosome in the genus Trypanosoma that causes one form of surra in animals. It has been proposed that T. evansi is—like T. equiperdum—a derivative of T. brucei. Due to this loss of part of the mitochondrial (kinetoplast) DNA T. evansi is not capable of infecting the invertebrate vector and establishing the subsequent life-stages. Due to its mechanical transmission T. evansi is not restricted to transmission via the tsetse fly but shows a very broad vector specificity including the genera Tabanus, Stomoxys, Haematopota, Chrysops and Lyperosia. It rarely causes disease in humans, indeed, it has only been recorded in cases where the patient lacks a normal component of human serum, Apolipoprotein L1.T. evansi is very common in India and causes acute disease in camels and horses, and chronic disease in cattle and buffaloes. The treatment for trypanosoma evansi is triquin(0.025ml/10 kg B.wt.) and surral (0.5 mg/kg B. wt.)
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