First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil
This is the first description of a Trypanosoma vivax outbreak in the state of São Paulo (municipality of Lins). Fever, jaundice, decreased milk production, weight loss, profuse diarrhea, abortion, anemia, leukocytosis and hyperfibrinogenemia were observed in the affected animals. Thirty-one cows and calves died out of a total of 1080 in the herd. Three cows showed neurological symptoms like dysmetria, ataxia, muscle weakness, ptyalism, lymph node enlargement and submandibular edema. Flagellated hemoparasites were observed in blood smears. The species was diagnosed as T. vivax by means of PCR. This T.vivax strain showed resistance to diaminazene aceturate and the infection spread quickly at the herd. From the ELISA test, 599 serum samples (98.36%) were positive for anti-T.vivax IgG antibodies. This outbreak occurred during a very dry period, which indicates that other factors were involved in the outbreak, such as absence of tabanids and large populations of Haematobia irritans and Stomoxys calcitrans. The increases in these populations may have been due to the use of biosolid waste from sugar and ethanol plants in the sugarcane plantations surrounding the dairy farm.
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Colégio Brasileiro de Parasitologia Veterinária
2012
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oai:scielo:S1984-296120120002000092012-07-19First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, BrazilCadioli,Fabiano AntonioBarnabé,Patrícia de AthaydeMachado,Rosangela ZacariasTeixeira,Márcia Cristina AlvesAndré,Marcos RogérioSampaio,Paulo HenriqueFidélis Junior,Otávio LuizTeixeira,Marta Maria GeraldesMarques,Luiz Carlos Bovine trypanosomiasis natural infection anemia T. vivax PCR This is the first description of a Trypanosoma vivax outbreak in the state of São Paulo (municipality of Lins). Fever, jaundice, decreased milk production, weight loss, profuse diarrhea, abortion, anemia, leukocytosis and hyperfibrinogenemia were observed in the affected animals. Thirty-one cows and calves died out of a total of 1080 in the herd. Three cows showed neurological symptoms like dysmetria, ataxia, muscle weakness, ptyalism, lymph node enlargement and submandibular edema. Flagellated hemoparasites were observed in blood smears. The species was diagnosed as T. vivax by means of PCR. This T.vivax strain showed resistance to diaminazene aceturate and the infection spread quickly at the herd. From the ELISA test, 599 serum samples (98.36%) were positive for anti-T.vivax IgG antibodies. This outbreak occurred during a very dry period, which indicates that other factors were involved in the outbreak, such as absence of tabanids and large populations of Haematobia irritans and Stomoxys calcitrans. The increases in these populations may have been due to the use of biosolid waste from sugar and ethanol plants in the sugarcane plantations surrounding the dairy farm.info:eu-repo/semantics/openAccessColégio Brasileiro de Parasitologia VeterináriaRevista Brasileira de Parasitologia Veterinária v.21 n.2 20122012-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612012000200009en10.1590/S1984-29612012000200009 |
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Cadioli,Fabiano Antonio Barnabé,Patrícia de Athayde Machado,Rosangela Zacarias Teixeira,Márcia Cristina Alves André,Marcos Rogério Sampaio,Paulo Henrique Fidélis Junior,Otávio Luiz Teixeira,Marta Maria Geraldes Marques,Luiz Carlos |
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Cadioli,Fabiano Antonio Barnabé,Patrícia de Athayde Machado,Rosangela Zacarias Teixeira,Márcia Cristina Alves André,Marcos Rogério Sampaio,Paulo Henrique Fidélis Junior,Otávio Luiz Teixeira,Marta Maria Geraldes Marques,Luiz Carlos First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
author_facet |
Cadioli,Fabiano Antonio Barnabé,Patrícia de Athayde Machado,Rosangela Zacarias Teixeira,Márcia Cristina Alves André,Marcos Rogério Sampaio,Paulo Henrique Fidélis Junior,Otávio Luiz Teixeira,Marta Maria Geraldes Marques,Luiz Carlos |
author_sort |
Cadioli,Fabiano Antonio |
title |
First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
title_short |
First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
title_full |
First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
title_fullStr |
First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
title_full_unstemmed |
First report of Trypanosoma vivax outbreak in dairy cattle in São Paulo state, Brazil |
title_sort |
first report of trypanosoma vivax outbreak in dairy cattle in são paulo state, brazil |
description |
This is the first description of a Trypanosoma vivax outbreak in the state of São Paulo (municipality of Lins). Fever, jaundice, decreased milk production, weight loss, profuse diarrhea, abortion, anemia, leukocytosis and hyperfibrinogenemia were observed in the affected animals. Thirty-one cows and calves died out of a total of 1080 in the herd. Three cows showed neurological symptoms like dysmetria, ataxia, muscle weakness, ptyalism, lymph node enlargement and submandibular edema. Flagellated hemoparasites were observed in blood smears. The species was diagnosed as T. vivax by means of PCR. This T.vivax strain showed resistance to diaminazene aceturate and the infection spread quickly at the herd. From the ELISA test, 599 serum samples (98.36%) were positive for anti-T.vivax IgG antibodies. This outbreak occurred during a very dry period, which indicates that other factors were involved in the outbreak, such as absence of tabanids and large populations of Haematobia irritans and Stomoxys calcitrans. The increases in these populations may have been due to the use of biosolid waste from sugar and ethanol plants in the sugarcane plantations surrounding the dairy farm. |
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Colégio Brasileiro de Parasitologia Veterinária |
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2012 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612012000200009 |
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