tetano
Editor, Senior Moderator
Virology. 2020 Feb;541:113-123. doi: 10.1016/j.virol.2019.10.014. Epub 2019 Oct 31. [h=1]Transmission dynamics between infected waterfowl and terrestrial poultry: Differences between the transmission and tropism of H5N8 highly pathogenic avian influenza virus (clade 2.3.4.4a) among ducks, chickens and turkeys.[/h]
Puranik A[SUP]1[/SUP], Slomka MJ[SUP]2[/SUP], Warren CJ[SUP]1[/SUP], Thomas SS[SUP]1[/SUP], Mahmood S[SUP]1[/SUP], Byrne AMP[SUP]1[/SUP], Ramsay AM[SUP]1[/SUP], Skinner P[SUP]1[/SUP], Watson S[SUP]3[/SUP], Everett HE[SUP]1[/SUP], N??ez A[SUP]4[/SUP], Brown IH[SUP]1[/SUP], Brookes SM[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] H5N8 highly-pathogenic avian influenza viruses (HPAIVs, clade 2.3.4.4) have spread globally via migratory waterfowl. Pekin ducks infected with a UK virus (H5N8-2014) served as the donors of infection in three separate cohousing experiments to attempt onward transmission chains to sequentially introduced groups of contact ducks, chickens and turkeys. Efficient transmission occurred among ducks and turkeys up to the third contact stage, with all (100%) birds becoming infected. Introduction of an additional fourth contact group of ducks to the turkey transmission chain demonstrated retention of H5N8-2014's waterfowl-competent adaptation. However, onward transmission ceased in chickens at the second contact stage where only 13% became infected. Analysis of viral progeny at this contact stage revealed no emergent polymorphisms in the intra-species (duck) transmission chain, but both terrestrial species included changes in the polymerase and accessory genes. Typical HPAIV pathogenesis and mortality occurred in infected chickens and turkeys, contrasting with 5% mortality among ducks.
Crown Copyright ? 2019. Published by Elsevier Inc. All rights reserved.
[h=4]KEYWORDS:[/h] A/goose/Guangdong/1/96 (GsGd) lineage; Chicken; Clade 2.3.4.4; Duck; H5N8 highly pathogenic avian influenza virus (HPAIV); Influenza; Pathogenesis; Polymorphism; Transmission; Turkey
PMID: 32056709 DOI: 10.1016/j.virol.2019.10.014
Puranik A[SUP]1[/SUP], Slomka MJ[SUP]2[/SUP], Warren CJ[SUP]1[/SUP], Thomas SS[SUP]1[/SUP], Mahmood S[SUP]1[/SUP], Byrne AMP[SUP]1[/SUP], Ramsay AM[SUP]1[/SUP], Skinner P[SUP]1[/SUP], Watson S[SUP]3[/SUP], Everett HE[SUP]1[/SUP], N??ez A[SUP]4[/SUP], Brown IH[SUP]1[/SUP], Brookes SM[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] H5N8 highly-pathogenic avian influenza viruses (HPAIVs, clade 2.3.4.4) have spread globally via migratory waterfowl. Pekin ducks infected with a UK virus (H5N8-2014) served as the donors of infection in three separate cohousing experiments to attempt onward transmission chains to sequentially introduced groups of contact ducks, chickens and turkeys. Efficient transmission occurred among ducks and turkeys up to the third contact stage, with all (100%) birds becoming infected. Introduction of an additional fourth contact group of ducks to the turkey transmission chain demonstrated retention of H5N8-2014's waterfowl-competent adaptation. However, onward transmission ceased in chickens at the second contact stage where only 13% became infected. Analysis of viral progeny at this contact stage revealed no emergent polymorphisms in the intra-species (duck) transmission chain, but both terrestrial species included changes in the polymerase and accessory genes. Typical HPAIV pathogenesis and mortality occurred in infected chickens and turkeys, contrasting with 5% mortality among ducks.
Crown Copyright ? 2019. Published by Elsevier Inc. All rights reserved.
[h=4]KEYWORDS:[/h] A/goose/Guangdong/1/96 (GsGd) lineage; Chicken; Clade 2.3.4.4; Duck; H5N8 highly pathogenic avian influenza virus (HPAIV); Influenza; Pathogenesis; Polymorphism; Transmission; Turkey
PMID: 32056709 DOI: 10.1016/j.virol.2019.10.014