Pathogenicity and Transmission of H5 and H7 Highly Pathogenic Avian Influenza Viruses in Mallards

被引：99

作者：

Pantin-Jackwood, Mary J. ^{[1
]}

Costa-Hurtado, Mar ^{[1
,3
,4
]}

Shepherd, Eric ^{[1
]}

DeJesus, Eric ^{[1
]}

Smith, Diane ^{[1
]}

Spackman, Erica ^{[1
,5
]}

Kapczynski, Darrell R. ^{[1
]}

Suarez, David L. ^{[1
]}

Stallknecht, David E. ^{[2
]}

Swayne, David E. ^{[1
]}

机构：

[1] ARS, Exot & Emerging Avian Viral Dis Unit, Southeast Poultry Res Lab, US Natl Poultry Res Ctr,USDA, Athens, GA 30605 USA

[2] Univ Georgia, Southeastern Cooperat Wildlife Dis Study, Athens, GA 30602 USA

[3] Univ Montreal, Fac Vet Med, Res Grp Infect Dis Prod Anim, St Hyacinthe, PQ, Canada

[4] Univ Montreal, Fac Vet Med, Swine & Poultry Infect Dis Res Ctr, St Hyacinthe, PQ, Canada

[5] Univ Georgia, Coll Vet Med, Poultry Diagnost & Res Ctr, Athens, GA USA

来源：

JOURNAL OF VIROLOGY | 2016年 / 90卷 / 21期

关键词：

DUCKS ANAS-PLATYRHYNCHOS; WILD BIRDS; EXPERIMENTAL-INFECTION; MIGRATORY BIRDS; DOMESTIC DUCKS; A VIRUSES; NATURAL INFECTION; POULTRY OUTBREAKS; CAIRINA-MOSCHATA; MUSCOVY DUCKS;

D O I：

10.1128/JVI.01165-16

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Wild aquatic birds have been associated with the intercontinental spread of H5 subtype highly pathogenic avian influenza (HPAI) viruses of the A/goose/Guangdong/1/96 (Gs/GD) lineage during 2005, 2010, and 2014, but dispersion by wild waterfowl has not been implicated with spread of other HPAI viruses. To better understand why Gs/GD H5 HPAI viruses infect and transmit more efficiently in waterfowl than other HPAI viruses, groups of mallard ducks were challenged with one of 14 different H5 and H7 HPAI viruses, including a Gs/GD lineage H5N1 (clade 2.2) virus from Mongolia, part of the 2005 dispersion, and the H5N8 and H5N2 index HPAI viruses (clade 2.3.4.4) from the United States, part of the 2014 dispersion. All virus-inoculated ducks and contact exposed ducks became infected and shed moderate to high titers of the viruses, with the exception that mallards were resistant to Ck/Pennsylvania/83 and Ck/Queretaro/95 H5N2 HPAI virus infection. Clinical signs were only observed in ducks challenged with the H5N1 2005 virus, which all died, and with the H5N8 and H5N2 2014 viruses, which had decreased weight gain and fever. These three viruses were also shed in higher titers by the ducks, which could facilitate virus transmission and spread. This study highlights the possible role of wild waterfowl in the spread of HPAI viruses.

引用

页码：9967 / 9982

页数：16

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