Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission
Asymptomatic influenza virus infections in pigs are frequent and the lack of measures for controlling viral spread facilitates the circulation of different virus strains between pigs. The goal of this study was to demonstrate the circulation of influenza A virus strains among asymptomatic piglets in...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2013-08-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762013000500548&lng=en&tlng=en |
| _version_ | 1797757660633759744 |
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| author | Ariane Ribeiro Amorim Luz Alba Maria Garcete Fornells Felicidade da Costa Reis Daiana Jacinto Rezende Gabriella da Silva Mendes José Nelson dos Santos Silva Couceiro Norma Suely de Oliveira Santos |
| author_facet | Ariane Ribeiro Amorim Luz Alba Maria Garcete Fornells Felicidade da Costa Reis Daiana Jacinto Rezende Gabriella da Silva Mendes José Nelson dos Santos Silva Couceiro Norma Suely de Oliveira Santos |
| author_sort | Ariane Ribeiro Amorim |
| collection | DOAJ |
| description | Asymptomatic influenza virus infections in pigs are frequent and the lack of measures for controlling viral spread facilitates the circulation of different virus strains between pigs. The goal of this study was to demonstrate the circulation of influenza A virus strains among asymptomatic piglets in an abattoir in Brazil and discuss the potential public health impacts. Tracheal samples (n = 330) were collected from asymptomatic animals by a veterinarian that also performed visual lung tissue examinations. No slaughtered animals presented with any noticeable macroscopic signs of influenza infection following examination of lung tissues. Samples were then analysed by reverse transcription-polymerase chain reaction that resulted in the identification of 30 (9%) influenza A positive samples. The presence of asymptomatic pig infections suggested that these animals could facilitate virus dissemination and act as a source of infection for the herd, thereby enabling the emergence of influenza outbreaks associated with significant economic losses. Furthermore, the continuous exposure of the farm and abattoir workers to the virus increases the risk for interspecies transmission. Monitoring measures of swine influenza virus infections and vaccination and monitoring of employees for influenza infection should also be considered. In addition regulatory agencies should consider the public health ramifications regarding the potential zoonotic viral transmission between humans and pigs. |
| first_indexed | 2024-03-12T18:17:52Z |
| format | Article |
| id | doaj.art-0b89240331914b878cbd537b0416f86d |
| institution | Directory Open Access Journal |
| issn | 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T18:17:52Z |
| publishDate | 2013-08-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-0b89240331914b878cbd537b0416f86d2023-08-02T09:00:09ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz1678-80602013-08-01108554855310.1590/0074-0276108052013003S0074-02762013000500548Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmissionAriane Ribeiro AmorimLuz Alba Maria Garcete FornellsFelicidade da Costa ReisDaiana Jacinto RezendeGabriella da Silva MendesJosé Nelson dos Santos Silva CouceiroNorma Suely de Oliveira SantosAsymptomatic influenza virus infections in pigs are frequent and the lack of measures for controlling viral spread facilitates the circulation of different virus strains between pigs. The goal of this study was to demonstrate the circulation of influenza A virus strains among asymptomatic piglets in an abattoir in Brazil and discuss the potential public health impacts. Tracheal samples (n = 330) were collected from asymptomatic animals by a veterinarian that also performed visual lung tissue examinations. No slaughtered animals presented with any noticeable macroscopic signs of influenza infection following examination of lung tissues. Samples were then analysed by reverse transcription-polymerase chain reaction that resulted in the identification of 30 (9%) influenza A positive samples. The presence of asymptomatic pig infections suggested that these animals could facilitate virus dissemination and act as a source of infection for the herd, thereby enabling the emergence of influenza outbreaks associated with significant economic losses. Furthermore, the continuous exposure of the farm and abattoir workers to the virus increases the risk for interspecies transmission. Monitoring measures of swine influenza virus infections and vaccination and monitoring of employees for influenza infection should also be considered. In addition regulatory agencies should consider the public health ramifications regarding the potential zoonotic viral transmission between humans and pigs.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762013000500548&lng=en&tlng=eninfluenza virusinterspecies transmissionzoonosispork industry |
| spellingShingle | Ariane Ribeiro Amorim Luz Alba Maria Garcete Fornells Felicidade da Costa Reis Daiana Jacinto Rezende Gabriella da Silva Mendes José Nelson dos Santos Silva Couceiro Norma Suely de Oliveira Santos Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission Memorias do Instituto Oswaldo Cruz influenza virus interspecies transmission zoonosis pork industry |
| title | Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission |
| title_full | Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission |
| title_fullStr | Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission |
| title_full_unstemmed | Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission |
| title_short | Influenza A virus infection of healthy piglets in an abattoir in Brazil: animal-human interface and risk for interspecies transmission |
| title_sort | influenza a virus infection of healthy piglets in an abattoir in brazil animal human interface and risk for interspecies transmission |
| topic | influenza virus interspecies transmission zoonosis pork industry |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762013000500548&lng=en&tlng=en |
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