Bovine Trypanosomiasis: Retrospective Investigation and Clinical Signs

Guilherme C. Garcia*, Dênia M. de Moura, Renata C. C. Frange, Eustáquio R. Bittar and Joely F. F. Bittar

Bovine Trypanosomiasis: Retrospective Investigation and Clinical Signs.

Trypanosoma vivax is a protozoan that causes Bovine tripanosomiasys. Originally from Africa, the disease has become common in other countries. Bovine trypanosomiasis is a disease underdiagnosed in many parts of the world, including Brazil. The lack of knowledge regarding this protozoan is a factor that contributes to the rapid spread of the disease. Many losses are attributed to the disease, including death of animals.
In West Africa, T. vivax is an important and pathogenic trypanosome in cattle, being a significant disease to animal breeding transmitted by the tsetse fly. In Latin America, mechanical vectors transmit the parasite.

It is important to emphasize that the Buffy coat technique allows detecting circulating parasite, i.e., in the acute phase or when the animal undergoes immunosuppression. Much of infections in cattle from endemic areas tend to be chronic course and not always fatal. Males showed 2% (1) positivity, lowered when compared to females 98% (49). Gestation, lactation, and secondly because females are more likely to contamination with fomites i.e. when the same needle is used for many animals in application of medication such as oxytocin before milking.

In South America, T. vivax transmission is mechanical. This work shows that even without the presence of the tsetse fly, there are bovine trypanosomiasis cases in Brazil, with severe symptoms attributed mainly to Tabanidae. In addition, the mechanical transmission by fomites is relatively easy. Brazil is an important pole in the production chain of animals. Much of infections in cattle from endemic areas tend to be chronic course and not always fatal.

Epidemiol Open J
. 2016; 1(1): 16-19. doi:10.17140/EPOJ-1-103

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