Novel Avian Influenza A(H7N9) Virus in Tree Sparrow, Shanghai, China, 2013

Zhao, Bin; Zhang, Xi; Zhu, Wenfei; Teng, Zheng; Yu, Xuelian; Gao, Ye; Wu, Di; Pei, Enle; Yuan, Zhengan; Yang, Lei; Wang, Dayang; Shu, Yuelong; Wu, Fan

doi:10.3201/eid2005.131707

Cited by 41 publications

(41 citation statements)

References 11 publications

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“…However, unlike vaccine viruses, the direction of transmission of virulent viruses can be more difficult to discern. Movement of AIV between farmed poultry and wild birds has been intensively studied, including transmission of highly pathogenic avian influenza viruses (HPAIV) from poultry into wild birds [21][22][23]. Vaccination of poultry may decrease the environmental burden of H5N1 HPAIV in endemic areas and thus limit transmission to wild birds [22].…”

Section: The Influence Of Vaccines On the Evolution Of Poultry Virusesmentioning

confidence: 99%

Impacts of poultry vaccination on viruses of wild bird

Devlin

Vaz

Coppo

et al. 2016

Current Opinion in Virology

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Spillover of viruses from farmed poultry into wild birds is a relatively new area of study at the livestock-wildlife interface. These transmission events can threaten the health of wild birds. There is growing evidence of transmission of vaccine viruses from poultry to wild birds, including attenuated vaccine strains of Newcastle disease virus and infectious bronchitis virus, and also spread of virulent viruses that may have evolved under the pressure of vaccine use, such as Marek's disease virus. Viral contaminants of poultry vaccines, including reticuloendotheliosis virus, may also be transmitted to wild birds and result in disease. New, vectored vaccines are less likely to directly spread to wild birds but this risk may rise as a result of recombination.

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Section: The Influence Of Vaccines On the Evolution Of Poultry Virusesmentioning

confidence: 99%

Impacts of poultry vaccination on viruses of wild bird

Devlin

Vaz

Coppo

et al. 2016

Current Opinion in Virology

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“…Riskbased approaches for the local spread of HPAI have identified wild birds as a risk factor for HPAI transmission (Tiensin et al, 2009). More recently, the isolation in a tree sparrow (Passer montanus) of the newly emerged H7N9 virus in China where it has caused severe human disease, and the evidence of replication of this H7N9 virus in several terrestrial birds, has raised concerns about the potential role of some passerines in the transmission of AIV with a pandemic potential (Jones et al, 2014;Zhao et al, 2014). Investigating this role is important to better protect poultry populations worldwide as they represent an increasing source of protein for human populations.…”

Section: Introductionmentioning

confidence: 99%

Bridge hosts for avian influenza viruses at the wildlife/domestic interface: An eco-epidemiological framework implemented in southern Africa

Caron

Grosbois

Etter

et al. 2014

Preventive Veterinary Medicine

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“…In 1997, the avian A/H5N1 virus was found in Hong Kong; this avian influenza virus showed direct bird-to-human transmission and resulted in serious mortality3. In 2013, a novel avian influenza virus H7N9 was identified in 12 provinces of China and caused a high mortality rate in humans45.…”

mentioning

confidence: 99%

An extract from Taxodium distichum targets hemagglutinin- and neuraminidase-related activities of influenza virus in vitro

Hsieh

Chen

Lin

et al. 2016

Sci Rep

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Influenza virus remains an emerging virus and causes pandemics with high levels of fatality. After screening different plant extracts with potential anti-influenza activity, a water extract of Taxodium distichum stems (TDSWex) showed excellent activity against influenza viruses. The EC50 of TDSWex was 0.051 ± 0.024 mg/mL against influenza virus A/WSN/33. TDSWex had excellent antiviral efficacy against various strains of human influenza A and B viruses, particularly oseltamivir-resistant clinical isolates and a swine-origin influenza strain. We observed that the synthesis of viral RNA and protein were inhibited in the presence of TDSWex. The results of the time-of-addition assay suggested that TDSWex inhibited viral entry and budding. In the hemagglutination inhibition assay, TDSWex inhibited the hemagglutination of red blood cells, implying that the extract targeted hemagglutin-related functions such as viral entry. In the attachment and penetration assay, TDSWex showed antiviral activity with EC50s of 0.045 ± 0.026 and 0.012 ± 0.003 mg/mL, respectively. In addition, TDSWex blocked neuraminidase activity. We conclude that TDSWex has bimodal activities against both hemagglutinin and neuraminidase during viral replication.

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Novel Avian Influenza A(H7N9) Virus in Tree Sparrow, Shanghai, China, 2013

Cited by 41 publications

References 11 publications

Impacts of poultry vaccination on viruses of wild bird

Impacts of poultry vaccination on viruses of wild bird

Bridge hosts for avian influenza viruses at the wildlife/domestic interface: An eco-epidemiological framework implemented in southern Africa

An extract from Taxodium distichum targets hemagglutinin- and neuraminidase-related activities of influenza virus in vitro

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