PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL
Equines are susceptible to respiratory viruses such as influenza and parainfluenza. Respiratory diseases have adversely impacted economies all over the world. This study was intended to determine the presence of influenza and parainfluenza viruses in unvaccinated horses from some regions of the state of São Paulo, Brazil. Blood serum collected from 72 equines of different towns in this state was tested by hemagglutination inhibition test to detect antibodies for both viruses using the corresponding antigens. About 98.6% (71) and 97.2% (70) of the equines responded with antibody protective titers (≥ 80 HIU/25µL) H7N7 and H3N8 subtypes of influenza A viruses, respectively. All horses (72) also responded with protective titers (≥ 80) HIU/25µL against the parainfluenza virus. The difference between mean antibody titers to H7N7 and H3N8 subtypes of influenza A viruses was not statistically significant (p > 0.05). The mean titers for influenza and parainfluenza viruses, on the other hand, showed a statistically significant difference (p < 0.001). These results indicate a better antibody response from equines to parainfluenza 3 virus than to the equine influenza viruses. No statistically significant differences in the responses against H7N7 and H3N8 subtypes of influenza A and parainfluenza 3 viruses were observed according to the gender (female, male) or the age (≤ 2 to 20 years-old) groups. This study provides evidence of the concomitant presence of two subtypes of the equine influenza A (H7N7 and H3N8) viruses and the parainfluenza 3 virus in equines in Brazil. Thus, it is advisable to vaccinate equines against these respiratory viruses.
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Instituto de Medicina Tropical de São Paulo
2014
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oai:scielo:S0036-466520140003001912014-05-27PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZILMancini,Dalva Assunção PortariPereira,Aparecida Santo PietroMendonça,Rita Maria ZucatelliKawamoto,Adelia Hiroko NagamoriAlves,Rosely Cabette BarbosaPinto,José RicardoMori,EnioRichtzenhain,Leonardo JoséMancini-Filho,Jorge Parainfluenza virus Influenza virus Serology Hemagglutination inhibition test Equines Equines are susceptible to respiratory viruses such as influenza and parainfluenza. Respiratory diseases have adversely impacted economies all over the world. This study was intended to determine the presence of influenza and parainfluenza viruses in unvaccinated horses from some regions of the state of São Paulo, Brazil. Blood serum collected from 72 equines of different towns in this state was tested by hemagglutination inhibition test to detect antibodies for both viruses using the corresponding antigens. About 98.6% (71) and 97.2% (70) of the equines responded with antibody protective titers (≥ 80 HIU/25µL) H7N7 and H3N8 subtypes of influenza A viruses, respectively. All horses (72) also responded with protective titers (≥ 80) HIU/25µL against the parainfluenza virus. The difference between mean antibody titers to H7N7 and H3N8 subtypes of influenza A viruses was not statistically significant (p > 0.05). The mean titers for influenza and parainfluenza viruses, on the other hand, showed a statistically significant difference (p < 0.001). These results indicate a better antibody response from equines to parainfluenza 3 virus than to the equine influenza viruses. No statistically significant differences in the responses against H7N7 and H3N8 subtypes of influenza A and parainfluenza 3 viruses were observed according to the gender (female, male) or the age (≤ 2 to 20 years-old) groups. This study provides evidence of the concomitant presence of two subtypes of the equine influenza A (H7N7 and H3N8) viruses and the parainfluenza 3 virus in equines in Brazil. Thus, it is advisable to vaccinate equines against these respiratory viruses.info:eu-repo/semantics/openAccessInstituto de Medicina Tropical de São PauloRevista do Instituto de Medicina Tropical de São Paulo v.56 n.3 20142014-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652014000300191en10.1590/S0036-46652014000300002 |
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Mancini,Dalva Assunção Portari Pereira,Aparecida Santo Pietro Mendonça,Rita Maria Zucatelli Kawamoto,Adelia Hiroko Nagamori Alves,Rosely Cabette Barbosa Pinto,José Ricardo Mori,Enio Richtzenhain,Leonardo José Mancini-Filho,Jorge |
spellingShingle |
Mancini,Dalva Assunção Portari Pereira,Aparecida Santo Pietro Mendonça,Rita Maria Zucatelli Kawamoto,Adelia Hiroko Nagamori Alves,Rosely Cabette Barbosa Pinto,José Ricardo Mori,Enio Richtzenhain,Leonardo José Mancini-Filho,Jorge PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
author_facet |
Mancini,Dalva Assunção Portari Pereira,Aparecida Santo Pietro Mendonça,Rita Maria Zucatelli Kawamoto,Adelia Hiroko Nagamori Alves,Rosely Cabette Barbosa Pinto,José Ricardo Mori,Enio Richtzenhain,Leonardo José Mancini-Filho,Jorge |
author_sort |
Mancini,Dalva Assunção Portari |
title |
PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
title_short |
PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
title_full |
PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
title_fullStr |
PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
title_full_unstemmed |
PRESENCE OF RESPIRATORY VIRUSES IN EQUINES IN BRAZIL |
title_sort |
presence of respiratory viruses in equines in brazil |
description |
Equines are susceptible to respiratory viruses such as influenza and parainfluenza. Respiratory diseases have adversely impacted economies all over the world. This study was intended to determine the presence of influenza and parainfluenza viruses in unvaccinated horses from some regions of the state of São Paulo, Brazil. Blood serum collected from 72 equines of different towns in this state was tested by hemagglutination inhibition test to detect antibodies for both viruses using the corresponding antigens. About 98.6% (71) and 97.2% (70) of the equines responded with antibody protective titers (≥ 80 HIU/25µL) H7N7 and H3N8 subtypes of influenza A viruses, respectively. All horses (72) also responded with protective titers (≥ 80) HIU/25µL against the parainfluenza virus. The difference between mean antibody titers to H7N7 and H3N8 subtypes of influenza A viruses was not statistically significant (p > 0.05). The mean titers for influenza and parainfluenza viruses, on the other hand, showed a statistically significant difference (p < 0.001). These results indicate a better antibody response from equines to parainfluenza 3 virus than to the equine influenza viruses. No statistically significant differences in the responses against H7N7 and H3N8 subtypes of influenza A and parainfluenza 3 viruses were observed according to the gender (female, male) or the age (≤ 2 to 20 years-old) groups. This study provides evidence of the concomitant presence of two subtypes of the equine influenza A (H7N7 and H3N8) viruses and the parainfluenza 3 virus in equines in Brazil. Thus, it is advisable to vaccinate equines against these respiratory viruses. |
publisher |
Instituto de Medicina Tropical de São Paulo |
publishDate |
2014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652014000300191 |
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