Influenza infection in humans and pigs in southeastern China
Identifieur interne : 000157 ( 1968/Analysis ); précédent : 000156; suivant : 000158Influenza infection in humans and pigs in southeastern China
Auteurs : N. Zhou [États-Unis, République populaire de Chine] ; S. He [République populaire de Chine] ; T. Zhang [République populaire de Chine] ; W. Zou [République populaire de Chine] ; L. Shu [États-Unis] ; G. B. Sharp [États-Unis] ; R. G. Webster [États-Unis]Source :
- Archives of Virology [ 0304-8608 ] ; 1996-03-01.
English descriptors
- Teeft :
- Antibody titers, Assay, Avian, Avian influenza viruses, Avian viruses, Bull world health organ, Carbonate buffer, Central china, Daily contact, Direct transmission, Duck virus, Elisa, Elisa method, Elisa titer, Elisa titers, Embryonated chicken eggs, Family business, Genetic reassortment, Hemagglutinin subunits, Hong kong, Human exposure, Human influenza, Human influenza viruses, Human pandemic strains, Human pandemics, Human viruses, Influenza, Influenza surveillance, Influenza virus, Influenza viruses, Interspecies transmission, Italian pigs, Jude research hospital, Local hospital, Medical virology, Memphis controls, Nanchang, Nanchang city, Nanchang populations, Nanchang region, Nanchang slaughterhouse workers, Northern china, Pandemic, Pandemic influenza, Pandemic virus, Pig, Positive samples, Reassortant, Reassortant influenza virus, Reassortant strain, Reassortment, Rice fields, Rural communities, Samples groups table, Screen serum samples, Serologic, Serum antibody responses, Serum samples, Slaughterhouse, Slaughterhouse workers, Southern china, Study groups, Suburban areas, Swine, Swine influenza virus, Swine virus, Swine viruses, Test wells, Titer, University students, Virology, Virus.
Abstract
Summary: The three last pandemic strains of influenza A virus-Asian/57, Hong Kong/68 and Russian/77 — are believed to have originated in China. The strains responsible for the 1957 and 1968 human pandemics were reassortants incorporating both human and avian influenza viruses, which may have arisen in pigs. We therefore undertook a population-based study in the Nanchang region of Central China to establish the prevalence, types and seasonal pattern of human influenza infection and to screen serum samples from animals and humans for evidence of interspecies transmission of influenza viruses. Two definite influenza seasons were demonstrated, one extending from November to March and the other July to September. The profile of antibodies to commonly circulating human influenza viruses was no different in Nanchang and neighboring rural communities than in Memphis, Tennessee, USA. In particular, Chinese women who raised pigs in their homes were no more likely to have been exposed to influenza virus than were subjects who seldom or never had contact with pigs. However, we did obtain evidence using isolated H7 protein in an enzyme-linked immunoabsorbent assay for infection of pig farmers by an avian H7 influenza virus suggesting that influenza A viruses may have been transmitted directly from ducks to humans. The results of the serological survey also indicated that pigs in or near Nanchang were infected by human H1N1 and H3N2 influenza viruses, but not with typical swine viruses. We found no serological evidence for H2 influenza viruses in humans after 1968.
Url:
DOI: 10.1007/BF01718323
Affiliations:
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The strains responsible for the 1957 and 1968 human pandemics were reassortants incorporating both human and avian influenza viruses, which may have arisen in pigs. We therefore undertook a population-based study in the Nanchang region of Central China to establish the prevalence, types and seasonal pattern of human influenza infection and to screen serum samples from animals and humans for evidence of interspecies transmission of influenza viruses. Two definite influenza seasons were demonstrated, one extending from November to March and the other July to September. The profile of antibodies to commonly circulating human influenza viruses was no different in Nanchang and neighboring rural communities than in Memphis, Tennessee, USA. In particular, Chinese women who raised pigs in their homes were no more likely to have been exposed to influenza virus than were subjects who seldom or never had contact with pigs. However, we did obtain evidence using isolated H7 protein in an enzyme-linked immunoabsorbent assay for infection of pig farmers by an avian H7 influenza virus suggesting that influenza A viruses may have been transmitted directly from ducks to humans. The results of the serological survey also indicated that pigs in or near Nanchang were infected by human H1N1 and H3N2 influenza viruses, but not with typical swine viruses. We found no serological evidence for H2 influenza viruses in humans after 1968.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li><li>États-Unis</li></country><region><li>Tennessee</li></region></list><tree><country name="États-Unis"><region name="Tennessee"><name sortKey="Zhou, N" sort="Zhou, N" uniqKey="Zhou N" first="N." last="Zhou">N. Zhou</name></region><name sortKey="Sharp, G B" sort="Sharp, G B" uniqKey="Sharp G" first="G. B." last="Sharp">G. B. Sharp</name><name sortKey="Sharp, G B" sort="Sharp, G B" uniqKey="Sharp G" first="G. B." last="Sharp">G. B. Sharp</name><name sortKey="Shu, L" sort="Shu, L" uniqKey="Shu L" first="L." last="Shu">L. Shu</name><name sortKey="Webster, R G" sort="Webster, R G" uniqKey="Webster R" first="R. G." last="Webster">R. G. Webster</name><name sortKey="Webster, R G" sort="Webster, R G" uniqKey="Webster R" first="R. G." last="Webster">R. G. Webster</name></country><country name="République populaire de Chine"><noRegion><name sortKey="Zhou, N" sort="Zhou, N" uniqKey="Zhou N" first="N." last="Zhou">N. Zhou</name></noRegion><name sortKey="He, S" sort="He, S" uniqKey="He S" first="S." last="He">S. He</name><name sortKey="Zhang, T" sort="Zhang, T" uniqKey="Zhang T" first="T." last="Zhang">T. Zhang</name><name sortKey="Zou, W" sort="Zou, W" uniqKey="Zou W" first="W." last="Zou">W. Zou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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