The Recent Establishment of North American H10 Lineage Influenza Viruses in Australian Wild Waterfowl and the Evolution of Australian Avian Influenza Viruses

Vijaykrishna, Dhanasekaran; Deng, Yi‐Mo; Su, Yvonne C. F.; Fourment, Mathieu; Iannello, Pina; Arzey, G.; Hansbro, Philip M.; Arzey, K E; Kirkland, Peter D.; Warner, Simone; O’Riley, Kim; Barr, Ian G.; Smith, Gavin J. D.; Hurt, Aeron C.

doi:10.1128/jvi.03437-12

Cited by 44 publications

(54 citation statements)

References 36 publications

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“…Additionally, the relatively long branch length shown in Figure1 (0·041 substitutions/site, μ = 0·0025, σ = 0·0064 for terminal branches of all publically available H10, n = 460) indicates that the Eurasian-lineage H10 may have been circulating in North America for many years prior to this detection. Interestingly, a recent study found that the North American lineage of H10 has been circulating in Australia for several years 12. Further surveillance is needed in less monitored species such as sea ducks, from which this isolate was recovered, to determine whether Eurasian-linage H10 is maintained in niche reservoirs within North America.…”

Section: Resultsmentioning

confidence: 99%

Genomic analyses detect Eurasian‐lineage H10 and additional H14 influenza A viruses recovered from waterfowl in the Central United States

Fries

Nolting

Bowman

et al. 2014

Influenza Resp Viruses

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The accurate and timely characterization of influenza A viruses (IAV) from natural reservoirs is essential for responses to animal and public health threats. Differences between antigenic and genetic subtyping results for 161 IAV isolates recovered from migratory birds in the central United States during 2010–2011 delayed the recognition of four isolates of interest. Genomic sequencing identified the first reported Eurasian-origin H10 subtype in North America and three additional H14 isolates showing divergence from previously reported H14 isolates. Genomic analyses revealed additional diversity among IAV isolates not detected by antigenic subtyping and provided further insight into interhemispheric spread of avian-origin IAVs.

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Section: Resultsmentioning

confidence: 99%

Genomic analyses detect Eurasian‐lineage H10 and additional H14 influenza A viruses recovered from waterfowl in the Central United States

Fries

Nolting

Bowman

et al. 2014

Influenza Resp Viruses

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“…Specifically, Australian wild bird AIV surveillance provides the principle source of AIV detections and sequence data to allow monitoring of HA and NA gene primer target sequence variability. This monitoring reduces the possibility of AIV detection failure, which could result from tests based solely on non‐Australian AIV strains, and provides confidence that the tests in use will detect contemporary strains of AIVs, especially H5/H7, in Australia. These outputs provide valuable support for contingency planning and preparedness for response and management.…”

Section: Discussionmentioning

confidence: 99%

“…[29][30][31] Phylogenetic analysis of the HA genes show that Australian AIVs typically form separate sub-clades of the Eurasian AIV lineage. 26 However, recent analysis of H10 AIVs detected in Australia since 2010 show that their HA genes are derived from North American-lineage AIVs, 24 which adds to the limited evidence of virus introductions from North America. 11 This molecular epidemiology and phylogenetic analysis highlights the value of Australian wild bird surveillance in enhancing the global understanding of AIV distribution and dispersal.…”

Section: Discussionmentioning

confidence: 99%

“…11 This molecular epidemiology and phylogenetic analysis highlights the value of Australian wild bird surveillance in enhancing the global understanding of AIV distribution and dispersal. 24,25 Although HPAI H5N1 remains endemic in many neighbouring Asian countries, risk analyses indicate a low likelihood of AIVs being introduced into Australia via migratory birds. 32,33 Our data show a low frequency of AIVs in these birds soon after their arrival.…”

Section: Discussionmentioning

confidence: 99%

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Avian influenza in Australia: a summary of 5 years of wild bird surveillance

et al. 2015

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Given Australia's isolation, both geographically and ecologically, it is important for Australia not to assume that the epidemiology of AIV from other geographic regions applies here. Despite all previous highly pathogenic avian influenza outbreaks in Australian poultry being attributed to H7 subtypes, widespread detection of H5 subtypes in wild birds may represent an ongoing risk to the Australian poultry industry.

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“…The first H10 isolate, an H10N7 virus, was detected in chickens in Germany in 1949 (1,2). Since then, viruses bearing H10 HA and different neuraminidase (NA) subtypes have been widely detected in wild birds and domestic poultry around the world (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19). Moreover, an H10N4 virus caused an outbreak of a respiratory disease in mink in Sweden in 1984 (20), and more recently, several U.S. turkey workers tested seropositive for H10 influenza virus (15).…”

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confidence: 99%

Genetics, Receptor Binding, and Virulence in Mice of H10N8 Influenza Viruses Isolated from Ducks and Chickens in Live Poultry Markets in China

Deng

Shi

Wang

et al. 2015

J Virol

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bWe analyzed eight H10N8 viruses isolated from ducks and chickens in live poultry markets from 2009 to 2013 in China. These viruses showed distinct genetic diversity and formed five genotypes: the four duck isolates formed four different genotypes, whereas the four chicken viruses belong to a single genotype. The viruses bound to both human-and avian-type receptors, and four of the viruses caused 12.7% to 22.5% body weight loss in mice. Influenza viruses bearing the H10 subtype hemagglutinin (HA) have been detected in avian species across wide geographic areas. The first H10 isolate, an H10N7 virus, was detected in chickens in Germany in 1949 (1, 2). Since then, viruses bearing H10 HA and different neuraminidase (NA) subtypes have been widely detected in wild birds and domestic poultry around the world (3-19). Moreover, an H10N4 virus caused an outbreak of a respiratory disease in mink in Sweden in 1984 (20), and more recently, several U.S. turkey workers tested seropositive for H10 influenza virus (15). In March 2010, an H10N7 virus caused an outbreak on a chicken farm in Australia; after processing clinically normal birds from the farm, seven abattoir workers reported conjunctivitis and minor upper respiratory tract symptoms and H10 virus infection was detected in two of the seven workers (11). In 2013, H10N8 virus caused three human infections in China, two of which were fatal (21, 22). Although sequence information about the H10 viruses is increasing (23-26), the biologic properties of these viruses remain largely unknown.A total of eight H10N8 influenza viruses were isolated from ducks and chickens during our routine surveillance from To investigate the genetic relationships among these viruses, we sequenced the genomes of all eight viruses. The amino acid motif at the HA cleavage site of these isolates is -R-, which is a characteristic of viruses of low pathogenicity in chickens. The eight genes of the viruses showed distinct diversity, with the HA, NA, PB2, PB1, PA, NP, M, and NS genes of the eight viruses sharing 94.7 to 100, 78.4 to 99.9, 89.9 to 100, 90.1 to 100, 89.7 to 100, 90.0 to 99.9, 90.5 to 100, and 89.3 to 99.9% identity, respectively, at the nucleotide level. The HA, PA, and NS genes each formed two branches in their phylogenetic trees (Fig. 1A, E, and H), whereas the NA, PB2, PB1, and M genes formed three branches each in their phylogenetic trees (Fig. 1B, C, D, and G) and the NP gene formed four branches in its phylogenetic tree (Fig. 1F). Of note, the six internal genes of the H10N8 viruses in branch 1 were clustered with the corresponding genes of H9N2 influenza viruses (Fig. 1C to H), and the NA gene in group 1 belongs to the North American lineage (Fig. 1B).On the basis of this genomic diversity, we divided the viruses into five genotypes (Table 1). Of note, the four duck viruses belong to four different genotypes, whereas the four chicken viruses belong to a single genotype, and the eight gene segments of the CK/JX/S3581/13 virus shared 99.2% to 99.9% identity with the human H10N8 virus...

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The Recent Establishment of North American H10 Lineage Influenza Viruses in Australian Wild Waterfowl and the Evolution of Australian Avian Influenza Viruses

Cited by 44 publications

References 36 publications

Genomic analyses detect Eurasian‐lineage H10 and additional H14 influenza A viruses recovered from waterfowl in the Central United States

Genomic analyses detect Eurasian‐lineage H10 and additional H14 influenza A viruses recovered from waterfowl in the Central United States

Avian influenza in Australia: a summary of 5 years of wild bird surveillance

Genetics, Receptor Binding, and Virulence in Mice of H10N8 Influenza Viruses Isolated from Ducks and Chickens in Live Poultry Markets in China

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