An overview on swine influenza viruses

Swine influenza viruses (SIVs) are respiratory pathogens of pigs. They cause both economic bur den in livestock-dependent industries and serious global public health concerns in humans. Because of their dual susceptibility to human and avian influenza viruses, pigs are recognized as intermediate hos...

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Bibliographic Details
Published inBingdu xuebao Vol. 29; no. 3; p. 330
Main Authors Yang, Shuai, Zhu, Wen-Fei, Shu, Yue-Long
Format Journal Article
LanguageChinese
Published China 01.05.2013
Subjects
Animals
Humans
Influenza A virus - genetics
Influenza A virus - isolation & purification
Influenza A virus - physiology
Influenza, Human - epidemiology
Influenza, Human - transmission
Influenza, Human - virology
Orthomyxoviridae Infections - epidemiology
Orthomyxoviridae Infections - transmission
Orthomyxoviridae Infections - veterinary
Orthomyxoviridae Infections - virology
Swine
Swine Diseases - epidemiology
Swine Diseases - transmission
Swine Diseases - virology
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Summary:Swine influenza viruses (SIVs) are respiratory pathogens of pigs. They cause both economic bur den in livestock-dependent industries and serious global public health concerns in humans. Because of their dual susceptibility to human and avian influenza viruses, pigs are recognized as intermediate hosts for genetic reassortment and interspecies transmission. Subtypes H1N1, H1N2, and H3N2 circulate in swine populations around the world, with varied origin and genetic characteristics among different continents and regions. In this review, the role of pigs in evolution of influenza A viruses, the genetic evolution of SIVs and interspecies transmission of SIVs are described. Considering the possibility that pigs might produce novel influenza viruses causing more outbreaks and pandemics, routine epidemiological surveillance of influenza viruses in pig populations is highly recommended.
ISSN:1000-8721