scholarly journals An avian influenza virus A(H7N9) reassortant that recently emerged in the United States with low pathogenic phenotype does not efficiently infect swine

2019 ◽  
Vol 13 (3) ◽  
pp. 288-291 ◽  
Author(s):  
Joshua D. Powell ◽  
Eugenio J. Abente ◽  
Mia K. Torchetti ◽  
Mary L. Killian ◽  
Amy L. Vincent
Keyword(s):  
United States ◽  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
The United States ◽  
Influenza Virus A

Surveillance for High Pathogenicity Avian Influenza Virus in Wild Birds in the Pacific Flyway of the United States, 2006–2007

2009 ◽  
Vol 4 (2) ◽  
pp. e9-e10
Author(s):  
Robert J. Dusek ◽  
J. Bradley Bortner ◽  
Thomas J. Deliberto ◽  
Jenny Hoskins ◽  
J. Christian Franson ◽  
...  
Keyword(s):  
United States ◽  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
The United States ◽  
Wild Birds ◽  
The Pacific ◽  
Pacific Flyway ◽  
High Pathogenicity

scholarly journals The Pathobiology of H7N3 Low and High Pathogenicity Avian Influenza Viruses from the United States Outbreak in 2020 Differs between Turkeys and Chickens

Viruses ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1851
Author(s):  
Miriã F. Criado ◽  
Christina M. Leyson ◽  
Sungsu Youk ◽  
Suzanne DeBlois ◽  
Tim Olivier ◽  
...  
Keyword(s):  
United States ◽  
Influenza Virus ◽  
South Carolina ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
The United States ◽  
Influenza Viruses ◽  
Infectious Dose ◽  
High Pathogenicity ◽  
Commercial Turkey

An outbreak caused by H7N3 low pathogenicity avian influenza virus (LPAIV) occurred in commercial turkey farms in the states of North Carolina (NC) and South Carolina (SC), United States in March of 2020. Subsequently, H7N3 high pathogenicity avian influenza virus (HPAIV) was detected on a turkey farm in SC. The infectivity, transmissibility, and pathogenicity of the H7N3 HPAIV and two LPAIV isolates, including one with a deletion in the neuraminidase (NA) protein stalk, were studied in turkeys and chickens. High infectivity [<2 log10 50% bird infectious dose (BID50)] and transmission to birds exposed by direct contact were observed with the HPAIV in turkeys. In contrast, the HPAIV dose to infect chickens was higher than for turkeys (3.7 log10 BID50), and no transmission was observed. Similarly, higher infectivity (<2–2.5 log10 BID50) and transmissibility were observed with the H7N3 LPAIVs in turkeys compared to chickens, which required higher virus doses to become infected (5.4–5.7 log10 BID50). The LPAIV with the NA stalk deletion was more infectious in turkeys but did not have enhanced infectivity in chickens. These results show clear differences in the pathobiology of AIVs in turkeys and chickens and corroborate the high susceptibility of turkeys to both LPAIV and HPAIV infections.

Surveillance for High Pathogenicity Avian Influenza Virus in Wild Birds in the Pacific Flyway of the United States, 2006–2007

2009 ◽  
Vol 53 (2) ◽  
pp. 222-230 ◽  
Author(s):  
Robert J. Dusek ◽  
J. Bradley Bortner ◽  
Thomas J. DeLiberto ◽  
Jenny Hoskins ◽  
J. Christian Franson ◽  
...  
Keyword(s):  
United States ◽  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
The United States ◽  
Wild Birds ◽  
The Pacific ◽  
Pacific Flyway ◽  
High Pathogenicity

Avian Influenza Virus Prevalence in Migratory Waterfowl in the United States, 2007–2009

2014 ◽  
Vol 58 (4) ◽  
pp. 531-540 ◽  
Author(s):  
Scott R. Groepper ◽  
Thomas J. DeLiberto ◽  
Mark P. Vrtiska ◽  
Kerri Pedersen ◽  
Seth R. Swafford ◽  
...  
Keyword(s):  
United States ◽  
Influenza Virus ◽  
Avian Influenza ◽  
Avian Influenza Virus ◽  
The United States ◽  
Migratory Waterfowl ◽  
Virus Prevalence
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