About: The first detection of influenza in the Finnish pig population: a retrospective study

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About: The first detection of influenza in the Finnish pig population: a retrospective study Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	The first detection of influenza in the Finnish pig population: a retrospective study
Creator	Huovilainen, Anita Ikonen, Niina Laine, Taina London, Laura Nokireki, Tiina
Source	Medline; PMC
abstract	BACKGROUND: Swine influenza is an infectious acute respiratory disease of pigs caused by influenza A virus. We investigated the time of entry of swine influenza into the Finnish pig population. We also describe the molecular detection of two types of influenza A (H1N1) viruses in porcine samples submitted in 2009 and 2010. This retrospective study was based on three categories of samples: blood samples collected for disease monitoring from pigs at major slaughterhouses from 2007 to 2009; blood samples from pigs in farms with a special health status taken in 2008 and 2009; and diagnostic blood samples from pigs in farms with clinical signs of respiratory disease in 2008 and 2009. The blood samples were tested for influenza A antibodies with an antibody ELISA. Positive samples were further analyzed for H1N1, H3N2, and H1N2 antibodies with a hemagglutination inhibition test. Diagnostic samples for virus detection were subjected to influenza A M-gene-specific real-time RT-PCR and to pandemic influenza A H1N1-specific real-time RT-PCR. Positive samples were further analyzed with RT-PCRs designed for this purpose, and the PCR products were sequenced and sequences analyzed phylogenetically. RESULTS: In the blood samples from pigs in special health class farms producing replacement animals and in diagnostic blood samples, the first serologically positive samples originated from the period July–August 2008. In samples collected for disease monitoring, < 0.1%, 0% and 16% were positive for antibodies against influenza A H1N1 in the HI test in 2007, 2008, and 2009, respectively. Swine influenza A virus of avian-like H1N1 was first detected in diagnostic samples in February 2009. In 2009 and 2010, the avian-like H1N1 virus was detected on 12 and two farms, respectively. The pandemic H1N1 virus (A(H1N1)pdm09) was detected on one pig farm in 2009 and on two farms in 2010. CONCLUSIONS: Based on our study, swine influenza of avian-like H1N1 virus was introduced into the Finnish pig population in 2008 and A(H1N1)pdm09 virus in 2009. The source of avian-like H1N1 infection could not be determined. Cases of pandemic H1N1 in pigs coincided with the period when the A(H1N1)pdm09 virus was spread in humans in Finland.
has issue date	2013-09-18(xsd:dateTime)
bibo:doi	10.1186/1751-0147-55-69
bibo:pmid	24047612
has license	cc-by
sha1sum (hex)	2558f92b15a62a49fdd0e7621ba97f1a4aa0080d
schema:url	https://doi.org/10.1186/1751-0147-55-69
resource representing a document's title	The first detection of influenza in the Finnish pig population: a retrospective study
has PubMed Central identifier	PMC3850993
has PubMed identifier	24047612
schema:publication	Acta Vet Scand
resource representing a document's body	covid:2558f92b15a62a49fdd0e7621ba97f1a4aa0080d#body_text
is schema:about of	named entity 'POPULATION' named entity 'DETECTION' named entity 'PIG' named entity 'INFLUENZA' named entity 'FINNISH' named entity 'RETROSPECTIVE STUDY' named entity 'Finnish' named entity 'hemagglutination inhibition' named entity 'influenza virus' named entity 'epidemic' named entity 'seropositive' named entity 'Finnish' named entity 'H1N1 influenza virus' named entity 'virus' named entity 'phylogenetic trees' named entity 'pig' named entity 'good health' named entity 'nucleotide' named entity 'disease monitoring' named entity 'swine influenza' named entity 'PRRS' named entity 'reassortant' named entity 'boar' named entity 'H1N1' named entity 'Mycoplasma hyopneumoniae' named entity 'H1N1' named entity 'Finland' named entity 'viruses' named entity 'H1N1' named entity 'serological' named entity 'pandemic strains' named entity 'blood samples' named entity 'swine influenza' named entity 'infection' named entity 'virus' named entity 'nucleotides' named entity 'clinical signs' named entity 'allantoic' named entity 'Sweden' named entity 'H1N1' named entity 'influenza' named entity 'neighbor-joining' named entity 'swine influenza' named entity 'swine influenza' named entity 'infection' named entity 'H3N2' named entity 'H1N1' named entity 'coding regions' named entity 'Norway' named entity 'Hilden' named entity 'H1N1' named entity 'subclinical' named entity 'St. Oedenrode' named entity 'viruses' named entity 'hemagglutination inhibition' named entity 'ClustalW' named entity 'H1N1' named entity 'H1N2' named entity 'clinical signs' named entity 'influenza virus' named entity 'swine influenza' named entity 'Finland' named entity 'Finland' named entity 'coronavirus' named entity 'serum samples' named entity 'swine influenza' named entity 'Serological' named entity 'antibodies' named entity 'human population' named entity 'hen's eggs' named entity 'slaughterhouse' named entity 'human population' named entity 'H1N1' named entity 'blood samples' named entity 'dead pigs' named entity 'Viral' named entity 'swine influenza'

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