Serological and virological surveillance of avian influenza virus in domestic ducks of the north-east region of Bangladesh

ABSTRACT Here, we report the complete genome sequence of an H6N8 avian influenza virus (AIV) isolated from wild waterfowl in Poyang Lake, China, in 2016. Phylogenetic analysis showed that it was a novel reassortant AIV between domestic ducks and wild waterfowl. The finding of this study is helpful for our understanding of the ecology and the evolutionary characteristics of H6 subtypes of AIV in birds.

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Different Routes of Inoculation Impact Infectivity and Pathogenesis of H5N1 High Pathogenicity Avian Influenza Virus Infection in Chickens and Domestic Ducks

Avian Diseases ◽

10.1637/9397-051810-reg.1 ◽

2010 ◽

Vol 54 (4) ◽

pp. 1260-1269 ◽

Cited By ~ 13

Author(s):

Y. K. Kwon ◽

D. E. Swayne

Keyword(s):

Influenza Virus ◽

Virus Infection ◽

Avian Influenza ◽

Avian Influenza Virus ◽

Influenza Virus Infection ◽

Domestic Ducks ◽

High Pathogenicity

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Detection of a Reassortant H9N2 Avian Influenza Virus with Intercontinental Gene Segments in a Resident Australian Chestnut Teal

Viruses ◽

10.3390/v12010088 ◽

2020 ◽

Vol 12 (1) ◽

pp. 88 ◽

Cited By ~ 6

Author(s):

Tarka Raj Bhatta ◽

Anthony Chamings ◽

Jessy Vibin ◽

Marcel Klaassen ◽

Soren Alexandersen

Keyword(s):

Influenza Virus ◽

Avian Influenza ◽

Avian Influenza Virus ◽

Phylogenetic Analyses ◽

Gene Segment ◽

Wild Birds ◽

Influenza Viruses ◽

H9n2 Avian Influenza Virus ◽

The North ◽

Southeastern Australia

The present study reports the genetic characterization of a low-pathogenicity H9N2 avian influenza virus, initially from a pool and subsequently from individual faecal samples collected from Chestnut teals (Anas castanea) in southeastern Australia. Phylogenetic analyses of six full gene segments and two partial gene segments obtained from next-generation sequencing showed that this avian influenza virus, A/Chestnut teal/Australia/CT08.18/12952/2018 (H9N2), was a typical, low-pathogenicity, Eurasian aquatic bird lineage H9N2 virus, albeit containing the North American lineage nucleoprotein (NP) gene segment detected previously in Australian wild birds. This is the first report of a H9N2 avian influenza virus in resident wild birds in Australia, and although not in itself a cause of concern, is a clear indication of spillover and likely reassortment of influenza viruses between migratory and resident birds, and an indication that any lineage could potentially be introduced in this way.

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Characterization of Avian Influenza Virus H10–H12 Subtypes Isolated from Wild Birds in Shanghai, China from 2016 to 2019

Viruses ◽

10.3390/v12101085 ◽

2020 ◽

Vol 12 (10) ◽

pp. 1085

Author(s):

Ling Tang ◽

Wangjun Tang ◽

Le Ming ◽

Jianming Gu ◽

Kai Qian ◽

...

Keyword(s):

Influenza Virus ◽

Avian Influenza ◽

Avian Influenza Virus ◽

North American ◽

Large Scale ◽

Phylogenetic Analyses ◽

Wild Birds ◽

The North ◽

Routine Surveillance ◽

Eurasian Lineage

H10, H11 and H12 (H10–H12) subtypes of the avian influenza virus (AIV) are associated with waterfowl. Although these subtypes of AIV are infrequently detected in nature, they can undergo reassortment with other AIV subtypes. Few H10–H12 subtypes of AIV have been isolated from wild birds in China. In this study, 12 AIV isolates of H10–H12 subtypes were identified via routine surveillance of wild birds in Shanghai, China from 2016 to 2019, including two H10, three H11 and seven H12 isolates. Sequence and phylogenetic analyses revealed that the genomic segments of the 12 isolates are highly diverse. These 12 isolates are closely related to those in the Eurasian lineage and share a high degree of sequence identity with those from wild birds and domestic ducks in countries in the East Asian–Australasian Flyway, including Japan, Korea, Bangladesh, Vietnam and China. However, parts of the genomic segments of two H12N2 isolates (NH112319-H12N2 and NH101807-H12N2) belong to the North American lineage, suggesting intercontinental reassortment among H12 AIVs in Eurasia and North American. To better understand the ecological and phylodynamic features of H10–H12 subtypes in wild birds, a large-scale surveillance of AIVs in wild birds is warranted.

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Corneal Opacity in Domestic Ducks Experimentally Infected With H5N1 Highly Pathogenic Avian Influenza Virus

Veterinary Pathology ◽

10.1177/0300985815591077 ◽

2015 ◽

Vol 53 (1) ◽

pp. 65-76 ◽

Cited By ~ 4

Author(s):

Y. Yamamoto ◽

K. Nakamura ◽

M. Yamada ◽

M. Mase

Keyword(s):

Influenza Virus ◽

Avian Influenza ◽

Avian Influenza Virus ◽

Highly Pathogenic Avian Influenza ◽

Corneal Opacity ◽

Domestic Ducks ◽

Highly Pathogenic ◽

Pathogenic Avian Influenza ◽

Pathogenic Avian Influenza Virus

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Characterization of a Low Pathogenic Avian Influenza Virus (H6N1) Isolated from Turkeys

Influenza Research and Treatment ◽

10.1155/2011/285218 ◽

2011 ◽

Vol 2011 ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

I. Shkoda ◽

E. Lapin ◽

E. Rosenbluth ◽

S. Perk ◽

Z. Geva ◽

...

Keyword(s):

Influenza Virus ◽

Avian Influenza ◽

Avian Influenza Virus ◽

Haemagglutination Inhibition ◽

Influenza Viruses ◽

Specific Primers ◽

Domestic Ducks ◽

Turkey Poults ◽

Pathogenic Avian Influenza Virus

An avian influenza virus (AIV), A/turkey/Israel/09 subtype H6N1, was isolated from turkey poults exhibiting typical pathology associated with AIV infection. The virus was characterized by RT-PCR using AIV subtype-specific primers and by the haemagglutination inhibition test using AIV subtype-specific antisera. The virus has an intravenous pathogenicity index of 0 and possessed a nucleotide sequence at the cleavage site of the hemagglutinin gene, PQIETR*GLF, associated with avian influenza viruses of low pathogenicity. Unlike the two previous H6N2 isolates originating from domestic ducks and mallard, the A/turkey/Israel/09 (H6N1) was isolated from turkeys. The gene sequences of the A/turkey/Israel/09 (H6N1) virus show divergence from the former Israeli H6 isolates.

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A 4-year study of avian influenza virus prevalence and subtype diversity in ducks of Newfoundland, Canada

Canadian Journal of Microbiology ◽

10.1139/cjm-2013-0507 ◽

2013 ◽

Vol 59 (10) ◽

pp. 701-708 ◽

Cited By ~ 9

Author(s):

Yanyan Huang ◽

Michelle Wille ◽

Ashley Dobbin ◽

Gregory J. Robertson ◽

Pierre Ryan ◽

...

Keyword(s):

Influenza Virus ◽

North America ◽

Avian Influenza ◽

Avian Influenza Virus ◽

North Atlantic Ocean ◽

Migratory Bird ◽

The North ◽

Environmental Reservoir ◽

American Black

The island of Newfoundland, Canada, is at the eastern edge of North America and has migratory bird connections with the continental mainland as well as across the North Atlantic Ocean. Here, we report a 4-year avian influenza virus (AIV) epidemiological study in ducks in the St. John’s region of Newfoundland. The overall prevalence of AIV detection in ducks during this study was 7.2%, with American Black Ducks contributing the vast majority of the collected samples and the AIV positives. The juvenile ducks showed a significantly higher AIV detection rate (10.6%) compared with adults (3.4%). Seasonally, AIV prevalence rates were higher in the autumn (8.4%), but positives were still detected in the winter (4.6%). Preliminary serology tests showed a high incidence of previous AIV infection (20/38, 52.6%). A total of 43 viruses were characterized for their HA–NA or HA subtypes, which revealed a large diversity of AIV subtypes and little recurrence of subtypes from year to year. Investigation of the movement patterns of ducks in this region showed that it is a largely non-migratory duck population, which may contribute to the observed pattern of high AIV subtype turnover. Phylogenetic analysis of 4 H1N1 and one H5N4 AIVs showed these viruses were highly similar to other low pathogenic AIV sequences from waterfowl in North America and assigned all gene segments into American-avian clades. Notably, the H1N1 viruses, which were identified in consecutive years, possessed homologous genomes. Such detection of homologous AIV genomes across years is rare, but indicates the role of the environmental reservoir in viral perpetuation.

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