Epidemiological survey of swine influenza A virus in selected wild boar populations in Germany

Kaden, Volker; Lange, Elke; Starick, Elke; Bruer, W.; Krakowski, Wolfgang; Klopries, M.

doi:10.1016/j.vetmic.2008.03.006

Cited by 23 publications

(27 citation statements)

References 17 publications

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“…Influenza infections in wild boars were reported in the United States (Gipson et al, 1999;Corn et al, 2009), France (Vittecoq et al, 2012), Germany (Polley et al, 2007;Kaden et al, 2008), Poland (Markowska-Daniel and Pejsak, 1999Markowska-Daniel and Kowalczyk, 2005), and Spain (Vicente et al, 2002;Closa-Sebastia et al, 2011). Our survey is consistent with previous investigations showing that coinfection of H1 and H3 influenza viruses is common in feral swine.…”

Section: Discussionsupporting

confidence: 91%

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Exposure to Swine H1 and H3 and Avian H5 and H9 Influenza a Viruses Among Feral Swine in Southern China, 2009

Luo

Dong

et al. 2013

Journal of Wildlife Diseases

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ABSTRACT:Swine play an important role in the disease ecology of influenza. Swine may provide the potential for mixed infections and genetic reassortment between avian, human, and porcine influenza viruses. We investigated the prevalence of antibodies to swine H1 and H3 influenza viruses and avian H5 and H9 influenza viruses in feral swine in southern China. Serum samples were collected from 31 feral swine harvested in 2009 in southern China. Of 31 serum samples tested, 14 (45%) had detectable antibody to H1 influenza virus and 23 (74%) were positive for H3 subtype. The antibody prevalence against both the swine H1 virus and the swine H3 virus was 45% (14/31). Five samples were reactive with both H1 and N1 subtype viruses, suggesting exposure to H1N1 viruses. All the sera tested were negative for avian H5 and H9 influenza viruses. Further investigations of influenza virus exposure of feral swine are needed to clarify their role in influenza ecology.

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Section: Discussionsupporting

confidence: 91%

“…Only a few investigators have examined exposure of feral swine to influenza viruses (Kaden et al, 2008;Closa-Sebastia et al, 2011;Vittecoq et al, 2012). Direct detection of viral antigen in feral swine is difficult because of the short course of the infection.…”

Section: Introductionmentioning

confidence: 99%

Exposure to Swine H1 and H3 and Avian H5 and H9 Influenza a Viruses Among Feral Swine in Southern China, 2009

Luo

Dong

et al. 2013

Journal of Wildlife Diseases

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“…The H1N1 subtype seems to be the most prevalent one among wild boars [39]. H3N2 influenza viruses were yet isolated too from naturally infected wild boars in Germany [40]. The sources of that wild boar infectedness could be pigs, humans or birds.…”

Section: Presumed Natural History Of Pandemic Influenza Strainsmentioning

confidence: 99%

The Modes of Evolutionary Emergence of Primal and Late Pandemic Influenza Virus Strains from Viral Reservoir in Animals: An Interdisciplinary Analysis

Shoham

2011

Influenza Research and Treatment

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Based on a wealth of recent findings, in conjunction with earliest chronologies pertaining to evolutionary emergences of ancestral RNA viruses, ducks, Influenzavirus A (assumingly within ducks), and hominids, as well as to the initial domestication of mallard duck (Anas platyrhynchos), jungle fowl (Gallus gallus), wild turkey (Meleagris gallopavo), wild boar (Sus scrofa), and wild horse (Equus ferus), presumed genesis modes of primordial pandemic influenza strains have multidisciplinarily been configured. The virological fundamentality of domestication and farming of those various avian and mammalian species has thereby been demonstrated and broadly elucidated, within distinctive coevolutionary paradigms. The mentioned viral genesis modes were then analyzed, compatibly with common denominators and flexibility that mark the geographic profile of the last 18 pandemic strains, which reputedly emerged since 1510, the antigenic profile of the last 10 pandemic strains since 1847, and the genomic profile of the last 5 pandemic strains since 1918, until present. Related ecophylogenetic and biogeographic aspects have been enlightened, alongside with the crucial role of spatial virus gene dissemination by avian hosts. A fairly coherent picture of primary and late evolutionary and genomic courses of pandemic strains has thus been attained, tentatively. Specific patterns underlying complexes prone to generate past and future pandemic strains from viral reservoir in animals are consequentially derived.

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“…Although many studies have examined influenza virus ecology in domestic pigs, the level of SIV circulation in the wild boar ( Sus scrofa ) population is unclear, as few studies have examined SIV infection in these animals [4, 5, 10, 15, 19, 22,23,24]. In particular, the prevalence of A (H1N1) pdm09 infection in wild boars is unclear, because no surveillance studies have been performed.…”

mentioning

confidence: 99%

“…Recent studies performed in Finland, Slovenia and France did not identify any wild boar that was seropositive for SIV [5, 10, 24]. However, another study found that 45% and 74% of wild boars in China were seropositive for subtypes H1 and H3, respectively [15].…”

mentioning

confidence: 99%

Serological evidence for influenza virus infection in Korean wild boars

Cho

Lim

Jeoung

et al. 2015

The Journal of Veterinary Medical Science

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Serum samples from 1,011 wild boars hunted in 2012 were collected for serological surveillance for 4 subtypes (pandemic A (H1N1) 2009 and classical H1N1, H1N2 and H3N2) of swine influenza virus (SIV). Samples from 12 of the boars were identified as positive for SIV (pandemic A (H1N1) 2009, n=9; classical H1N1, n=2; and H1N2, n=1) by a hemagglutination inhibition test (HI test) and a nucleoprotein (NP)-based enzyme-linked immunosorbent assay (NP-ELISA). Although the overall seroprevalence of SIV in the Korean wild boar population was somewhat low compared with that in China and the U.S.A., the apparent prevalence of pandemic H1N1 was notable. Therefore, continuous monitoring of the wild boar population is needed as it may be a major reservoir for pandemic H1N1, facilitating its spread to humans and domestic pigs.

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Epidemiological survey of swine influenza A virus in selected wild boar populations in Germany

Cited by 23 publications

References 17 publications

Exposure to Swine H1 and H3 and Avian H5 and H9 Influenza a Viruses Among Feral Swine in Southern China, 2009

Exposure to Swine H1 and H3 and Avian H5 and H9 Influenza a Viruses Among Feral Swine in Southern China, 2009

The Modes of Evolutionary Emergence of Primal and Late Pandemic Influenza Virus Strains from Viral Reservoir in Animals: An Interdisciplinary Analysis

Serological evidence for influenza virus infection in Korean wild boars

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