Serological evidence of H7, H5 and H9 avian influenza virus co-infection among herons in a city park in Jiangxi, China

Wang, Guirong; Zhang, Tao; Li, Xiaowen; Jiang, Zhi‐Qiang; Qian, Jiang; Chen, Quanjiao; Tu, Xiaobin; Chen, Ze; Chang, Jianyu; Li, Laixing; Xu, Bing

doi:10.1038/srep06345

Cited by 24 publications

(17 citation statements)

References 45 publications

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“…Wild birds are at risk from infection and co-infection with H5, H7 and H9 subtypes. Investigation of wild bird infection might provide an early warning sign of potential novel AIVs circulating in the nearby poultry industry and even in human society (Wang, Zhang, et al 2014). It is plausible that they may act as carriers of fundamental genome segments.…”

Section: Transmission Patternmentioning

confidence: 99%

Persistence and transmission of avian influenza A (H5N1): virus movement, risk factors and pandemic potential

Tian

2015

Annals of GIS

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Repeated outbreaks in epidemic areas and invasion of new countries and regions expanded influence on poultry production, economics and the ecology of wild birds. Highly pathogenic avian influenza (HPAI) H5N1 has moved the world closer to a further global pandemic. An understanding of HPAI H5N1 transmission and persistence is therefore of significance for the prevention and control of epidemics. In this review we consider virus movement through poultry production systems (live bird markets, small holder farms and industry), wild bird migration and vector media (biological and mechanical); risk factors in poultry production systems (commercial, backyard and free-grazing farm); and the ecological environments (avian community, ecology and geographical isolation) of epidemic areas, and their effects on H5N1 virus transmission and persistence. We conclude that the pandemic potential, widespread transmission and sustained persistence of H5N1 is the result of conflicts between traditional production and consumption habits and the intense poultry production industry in Southeast Asia.

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Section: Transmission Patternmentioning

confidence: 99%

Persistence and transmission of avian influenza A (H5N1): virus movement, risk factors and pandemic potential

Tian

2015

Annals of GIS

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“…; Wang et al . ). Measurement of a disease risk had provided effective and timely control efforts before disease outbreaks occurred.…”

Section: Introductionmentioning

confidence: 97%

Seroepidemiology and assessment of risk factors for the spread of avian influenza in birds in two Nigerian states

Waziri¹,

Abdu

Lawal

et al. 2017

Veterinary Medicine & Sci

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Despite modified stamping out eradication policy adopted in Nigeria, there was resurgence in 2015 of highly pathogenic avian influenza (HPAI) H5N1 with greater infectivity. A survey of the risk of spread of HPAI in two HPAI‐infected and ‐uninfected Nigerian states were studied. A cross‐sectional study to detect avian influenza (AI) H5 antibodies was conducted using haemagglutination inhibition (HI) test and enzyme‐linked immunosorbent assay (ELISA). A total of 950 birds’ sera were tested for AI H5 antibodies. Questionnaires were also administered to evaluate risks of AI spread in two states of Nigeria in 2013. AI H5 seroprevalence of 3% and 5% were obtained in Bauchi and Gombe states, respectively. Free flying and captive wild birds had 15% and 11% seroprevalence, respectively. Ninety‐two per cent AI awareness and 90% preparedness to report outbreaks of poultry diseases were recorded. Veterinary personnel, radio and television contributed 87% to HPAI awareness. Of the 10 risk categories evaluated, Gombe state had 3 moderate and 1 high risk of AI virus spread. Bauchi state recorded 5 moderate and 1 high risk of AI virus spread. Chi‐square analysis showed associations of altitude, temperature, rainfall and presence of live bird markets (LBMs) (P < 0.05) to AI seroprevalence. Odds ratio at 95% CI (1.313–6.333) indicated LBMs presence to be three times more likely to influence AI occurrence. HPAI H5N1 resurged in many states and occurred for the first time in Gombe state in 2015. Veterinary personnel, radio and television may be reliable in changing farmers’ attitudes to adopt good biosecurity practices.

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“…In African countries and Turkey, it is common practice to keep multispecies poultry in a free-range system. Poultry may therefore become infected from close contact with wild birds, and spread virus further to other wild birds and other poultry species (Akanbi & Taiwo, 2014;Wang et al, 2014). In this way, the interactions between wild bird and poultry contributed to the diverse transmission patterns observed.…”

Section: Cross-species Virus Transmission Networkmentioning

confidence: 99%

Genetic evidence for avian influenza H5N1 viral transmission along the Black Sea–Mediterranean Flyway

Zhou

Tian

et al. 2016

Journal of General Virology

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The current epidemic of highly pathogenic avian influenza H5N1 virus is considered to pose a significant threat to the health of wild and domestic avian species, and even to human beings. The Black Sea-Mediterranean Flyway is one of the most important epidemic areas of H5N1. However, the epidemic along this flyway has not been fully explored. To better understand the role of hosts in the spread and evolution of H5N1 virus along the flyway, a phylogeographic study was conducted using haemagglutinin (HA) gene sequences obtained during [2005][2006][2007][2008][2009][2010][2011][2012][2013]. To infer phylodynamic spread in time and space, we used a flexible Bayesian statistical framework and modelled viral spatial diffusion as a continuous-time Markov-chain process along timemeasured genealogies. Our results revealed that H5N1 virus isolated from wild birds showed an increase in genetic variation of HA gene from [2005][2006][2007]. The mean genetic distance of viruses isolated from poultry reached its peak in 2010, and dropped in 2011, increasing again in 2012-2013. The reconstruction of virus circulation revealed a different viral-migration network of H5N1 virus by different hosts. Western Russia constituted a link in viral migration from Russia to Europe and Africa. Cross-species transmission of H5N1 viruses predominated in the migration network of the Black Sea-Mediterranean Flyway. This might be due to the migration of birds across long distances and interaction between local poultry and migratory birds. Additionally, the short-distance spread of H5N1 viruses among poultry followed local transportation networks. Such findings will aid in developing effective disease control and prevention strategies.

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Serological evidence of H7, H5 and H9 avian influenza virus co-infection among herons in a city park in Jiangxi, China

Cited by 24 publications

References 45 publications

Persistence and transmission of avian influenza A (H5N1): virus movement, risk factors and pandemic potential

Persistence and transmission of avian influenza A (H5N1): virus movement, risk factors and pandemic potential

Seroepidemiology and assessment of risk factors for the spread of avian influenza in birds in two Nigerian states

Genetic evidence for avian influenza H5N1 viral transmission along the Black Sea–Mediterranean Flyway

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