Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022

A systematic surveillance against influenza A viruses (IAVs) in the <i>Suidae</i> population is essential, considering their role as IAV mixing vessels. However, the viral circulation in wild <i>Sus scrofa</i> species is poorly investigated in comparison to the knowledge of I...

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Main Authors: Alice Prosperi, Laura Soliani, Elena Canelli, Laura Baioni, Valentina Gabbi, Camilla Torreggiani, Roberta Manfredi, Irene Calanchi, Giovanni Pupillo, Filippo Barsi, Patrizia Bassi, Laura Fiorentini, Matteo Frasnelli, Maria Cristina Fontana, Andrea Luppi, Chiara Chiapponi
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/12/12/1593
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author Alice Prosperi
Laura Soliani
Elena Canelli
Laura Baioni
Valentina Gabbi
Camilla Torreggiani
Roberta Manfredi
Irene Calanchi
Giovanni Pupillo
Filippo Barsi
Patrizia Bassi
Laura Fiorentini
Matteo Frasnelli
Maria Cristina Fontana
Andrea Luppi
Chiara Chiapponi
author_facet Alice Prosperi
Laura Soliani
Elena Canelli
Laura Baioni
Valentina Gabbi
Camilla Torreggiani
Roberta Manfredi
Irene Calanchi
Giovanni Pupillo
Filippo Barsi
Patrizia Bassi
Laura Fiorentini
Matteo Frasnelli
Maria Cristina Fontana
Andrea Luppi
Chiara Chiapponi
author_sort Alice Prosperi
collection DOAJ
description A systematic surveillance against influenza A viruses (IAVs) in the <i>Suidae</i> population is essential, considering their role as IAV mixing vessels. However, the viral circulation in wild <i>Sus scrofa</i> species is poorly investigated in comparison to the knowledge of IAV infection dynamics in domestic pigs. This study investigated the circulation and the genetic diversity of wild boars’ IAVs detected in the Emilia-Romagna region (2017–2022). A total of 4605 lung samples were screened via an M gene real-time RT-PCR for SwIAV; positive samples were subtyped by multiplex RT-PCR, and viral isolation was attempted. Isolated strains (3 out of the 17 positives) were fully sequenced to evaluate viral genotypic diversity. H1N1 was the most frequently detected subtype, with identification of H1pdm09N1 and H1avN1. Whole-genome phylogenetic analysis revealed SwIAVs belonging to different genotypes, with different genetic combinations, and highlighted the simultaneous circulation of the same genotypes in both pigs and wild boars, supporting the hypothesis of SwIAV spillover events at the wildlife–livestock interface. This study represents an update on the wild boar SwIAV Italian situation, and the strains’ complete genome analysis showed an evolving and interesting situation that deserves further investigation.
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spelling doaj.art-0ff6f08daae345328c11b3db9b49d0422023-11-23T15:15:48ZengMDPI AGAnimals2076-26152022-06-011212159310.3390/ani12121593Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022Alice Prosperi0Laura Soliani1Elena Canelli2Laura Baioni3Valentina Gabbi4Camilla Torreggiani5Roberta Manfredi6Irene Calanchi7Giovanni Pupillo8Filippo Barsi9Patrizia Bassi10Laura Fiorentini11Matteo Frasnelli12Maria Cristina Fontana13Andrea Luppi14Chiara Chiapponi15OIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalySwine Pratictioner—ECPHM Diplomate, 42030 Viano, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyOIE Reference Laboratory for Swine Influenza, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), 25124 Brescia, ItalyA systematic surveillance against influenza A viruses (IAVs) in the <i>Suidae</i> population is essential, considering their role as IAV mixing vessels. However, the viral circulation in wild <i>Sus scrofa</i> species is poorly investigated in comparison to the knowledge of IAV infection dynamics in domestic pigs. This study investigated the circulation and the genetic diversity of wild boars’ IAVs detected in the Emilia-Romagna region (2017–2022). A total of 4605 lung samples were screened via an M gene real-time RT-PCR for SwIAV; positive samples were subtyped by multiplex RT-PCR, and viral isolation was attempted. Isolated strains (3 out of the 17 positives) were fully sequenced to evaluate viral genotypic diversity. H1N1 was the most frequently detected subtype, with identification of H1pdm09N1 and H1avN1. Whole-genome phylogenetic analysis revealed SwIAVs belonging to different genotypes, with different genetic combinations, and highlighted the simultaneous circulation of the same genotypes in both pigs and wild boars, supporting the hypothesis of SwIAV spillover events at the wildlife–livestock interface. This study represents an update on the wild boar SwIAV Italian situation, and the strains’ complete genome analysis showed an evolving and interesting situation that deserves further investigation.https://www.mdpi.com/2076-2615/12/12/1593influenza A viruswild boarviral circulationgenetic characterization
spellingShingle Alice Prosperi
Laura Soliani
Elena Canelli
Laura Baioni
Valentina Gabbi
Camilla Torreggiani
Roberta Manfredi
Irene Calanchi
Giovanni Pupillo
Filippo Barsi
Patrizia Bassi
Laura Fiorentini
Matteo Frasnelli
Maria Cristina Fontana
Andrea Luppi
Chiara Chiapponi
Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
Animals
influenza A virus
wild boar
viral circulation
genetic characterization
title Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
title_full Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
title_fullStr Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
title_full_unstemmed Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
title_short Influenza A in Wild Boars: Viral Circulation in the Emilia-Romagna Region (Northern Italy) between 2017 and 2022
title_sort influenza a in wild boars viral circulation in the emilia romagna region northern italy between 2017 and 2022
topic influenza A virus
wild boar
viral circulation
genetic characterization
url https://www.mdpi.com/2076-2615/12/12/1593
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