scholarly journals RESULTS OF LONG-TERM (2006-2016) AVIAN INFLUENZA SURVEILLANCE IN WILD BIRDS OF UVS NUUR LAKE

2016 ◽  
Vol 11 (3) ◽  
pp. 106-119
Author(s):  
A. M. Shestopalov ◽  
K. A. Sharshov ◽  
A. V. Varkentin ◽  
Y. G. Yushkov ◽  
S. V. Leonov ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Birds ◽  
Influenza Surveillance

scholarly journals Reassortment and persistence of influenza A viruses from diverse geographic origins within Australian wild birds: evidence from a small, isolated population of Ruddy turnstones

2021 ◽  
Author(s):  
Bethany J. Hoye ◽  
Celeste M. Donato ◽  
Simeon Lisovski ◽  
Yi-Mo Deng ◽  
Simone Warner ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza A ◽  
Wild Birds ◽  
Influenza Viruses ◽  
Low Density ◽  
Isolated Population ◽  
Influenza A Viruses ◽  
Geographic Origins ◽  
Eastern Australia

Australian lineages of avian influenza A viruses (AIVs) are thought to be phylogenetically distinct from those circulating in Eurasia and the Americas, suggesting the circulation of endemic viruses seeded by occasional introductions from other regions. However, processes underlying the introduction, evolution and maintenance of AIVs in Australia remain poorly understood. Waders (Order Charadriiformes, Family Scolopacidae) may play a unique role in the ecology and evolution of AIVs, particularly in Australia, where ducks, geese and swans (Order Anseriformes, Family Anatidae) rarely undertake intercontinental migrations. Across a five-year surveillance period (2011–2015), Ruddy turnstones (Arenaria interpres) that ‘overwinter’ during the Austral summer in south eastern Australia showed generally low levels of AIV prevalence (0–2%). However, in March 2014 we detected AIVs in 32% (95% CI; 25–39%) of individuals in a small, low-density, island population 90km from the Australian mainland. This epizootic comprised three distinct AIV genotypes, each of which represent a unique reassortment of Australian, recently introduced Eurasian, and recently introduced American-lineage gene segments. Strikingly, the Australian-lineage gene segments showed high similarity to H10N7 viruses isolated in 2010 and 2012 from poultry outbreaks 900–1500km to the north. Together with the diverse geographic origins of the American and Eurasian gene segments, these findings suggest extensive circulation and reassortment of AIVs within Australian wild birds over vast geographic distances. Our findings indicate that long-term surveillance in waders may yield unique insights into AIV gene flow, especially in geographic regions like Oceania where Anatidae do not display regular inter- or intracontinental migration. IMPORTANCE High prevalence of avian influenza viruses (AIVs) was detected in a small, low-density, isolated population of Ruddy turnstones in Australia. Analysis of these viruses revealed relatively recent introductions of viral gene segments from both Eurasia and North America, as well as long-term persistence of introduced gene segments in Australian wild birds. These data demonstrate that the flow of viruses into Australia may be more common than initially thought and that, once introduced, these AIVs have the potential to be maintained within the continent. These findings add to a growing body of evidence suggesting Australian wild birds are unlikely to be ecologically-isolated from the highly pathogenic H5Nx viruses circulating among wild birds throughout the northern hemisphere.

scholarly journals Large-Scale Avian Influenza Surveillance in Wild Birds throughout the United States

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e104360 ◽  
Author(s):  
Sarah N. Bevins ◽  
Kerri Pedersen ◽  
Mark W. Lutman ◽  
John A. Baroch ◽  
Brandon S. Schmit ◽  
...  
Keyword(s):  
United States ◽  
Avian Influenza ◽  
Large Scale ◽  
The United States ◽  
Wild Birds ◽  
Influenza Surveillance

scholarly journals Avian influenza surveillance in wild birds in the European Union in 2006

2009 ◽  
Vol 3 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Uta Hesterberg ◽  
Kate Harris ◽  
David Stroud ◽  
Vittorio Guberti ◽  
Luca Busani ◽  
...  
Keyword(s):  
European Union ◽  
Avian Influenza ◽  
Wild Birds ◽  
Influenza Surveillance ◽  
The European Union

scholarly journals Avian influenza surveillance in wild birds using sentinel ducks

2020 ◽  
Vol 29 (1) ◽  
pp. 3-8
Author(s):  
Bayarmagnai Davganyam ◽  
Nyamsuren Otgontogtokh ◽  
Baljidmaa Batmunkh ◽  
Davaasuren Nergui ◽  
Ariunaa Tserendorj ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Bird ◽  
Sentinel Surveillance ◽  
Wild Birds ◽  
Influenza Surveillance ◽  
Serum Samples ◽  
Bird Populations ◽  
Bird Habitat ◽  
Insulated Isothermal Pcr ◽  
H5n1 Hpai

We conducted active surveillance for avian influenza virus using sentinel ducks in central region of Mongolia (Khunt lake Saikhan soum, Bulgan province) that major wild bird habitat and outbreak site of H5N1 HPAI in wild birds in Mongolia from 2005 to 2011. Total of 39/104 (37,5%) samples were positive by insulated isothermal PCR (iiPCR) and 42/104 (40,38%) swab samples were positive by real time PCR (qPCR). In addition, AIV antibody detected in 35/104 (33,65%) serum samples tested by AIV NP ELISA kit. These results indicated that sentinel surveillance using domestic birds could be an effective method for avian pathogens including influenza in Mongolia. Enhanced sentinel surveillance in wild bird populations in Mongolia is therefore crucial for the understanding of global AIV transmission and epidemiology. Шувууны томуугийн тандах судалгаанд туршуул шувуу (Sentinel bird) байршуулах арга ашигласан дүнгээс Бид шувууны томуугийн тандах судалгаанд туршуул шувуу байршуулах арга зүйг ашиглах боломжийг судлах зорилгоор урьдчилсан туршилтыг 2019 оны 7-10 сард Булган аймгийн Сайхан сумын Хунт нууранд хийж гүйцэтгэв. Хунт нуур нь олон тооны нүүдлийн усны шувууд зусах болон дайрч өнгөрдөг ач холбогдолтой цэг бөгөөд 2005-2011 онд өндөр хоруу чанартай шувууны томуугийн (HPAI) A/H5N1 дэд хэвшлийн вирус илэрч байсан. Шувуунаас авсан арчдасны зарим дээжийг insulated isothermal PCR (iiPCR)-р шинжлэхэд 39/104 (37,5%), дээж эерэг, бүх дээжийг PCR (qPCR)-р шинжлэхэд 42/104 (40,38%) нь дээж эерэг дүн үзүүлсэн. Харин ийлдсэнд шувууны томуугийн эсрэг бием илрүүлэх ELISA-ийн шинжилгээгээр  35/104 (33,65%) дээжинд  эсрэг бием илэрсэн. Иймд энэ арга зүйг Монгол орны нөхцөлд тохируулан сайжруулж шувууны томуугийн үүсгэгчийг илрүүлэхэд ашиглах нь уг өвчний эпидемиологийн байдлыг танин мэдэхэд чухал ач холбогдолтой  юм. Түлхүүр үг: нугас, вирус, дархлаа, эпидемиологи, тархалт, ПГУ (Полимеразан  гинжин урвал)

Avian biology, the human influence on global avian influenza transmission, and performing surveillance in wild birds

2010 ◽  
Vol 11 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Samantha E. J. Gibbs
Keyword(s):  
Avian Influenza ◽  
Disease Transmission ◽  
Significant Risk ◽  
Lessons Learned ◽  
Wild Birds ◽  
Influenza Viruses ◽  
Influenza Surveillance ◽  
Future Research ◽  
Avian Host ◽  
Outbreak Response

AbstractThis paper takes a closer look at three interrelated areas of study: avian host biology, the role of human activities in virus transmission, and the surveillance activities centered on avian influenza in wild birds. There are few ecosystems in which birds are not found. Correspondingly, avian influenza viruses are equally global in distribution, relying on competent avian hosts. The immune systems, annual cycles, feeding behaviors, and migration patterns of these hosts influence the ecology of the disease. Decreased biodiversity has also been linked to heightened disease transmission in several disease systems, and it is evident that active destruction and modification of wetland environments for human use is impacting avian populations drastically. Legal and illegal trade in wild birds present a significant risk for introduction and maintenance of exotic diseases. After the emergence of HPAI H5N1 in Hong Kong in 1996 and the ensuing geographic spread of outbreaks after 2003, both infected countries and those at risk of introduction began intensifying avian influenza surveillance efforts. Several techniques for sampling wild birds for influenza viruses have been applied. Benefits, problems, and biases exist for each method. The wild bird avian influenza surveillance programs taking place across the continents are now scaling back due to the rise of other spending priorities; hopefully the lessons learned from this work will be preserved and will inform future research and disease outbreak response priorities.

A LONG-TERM SEROSURVEY OF AVIAN INFLUENZA H5 AMONG WILD BIRDS IN NAKHON SAWAN PROVINCE, THAILAND

2018 ◽  
Vol 49 (2) ◽  
pp. 464-469 ◽  
Author(s):  
Kanaporn Poltep ◽  
Natthaphat Ketchim ◽  
Weena Paungpin ◽  
Phirom Prompiram ◽  
Poonyapat Sedwisai ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Birds

scholarly journals Global Avian Influenza Surveillance in Wild Birds: A Strategy to Capture Viral Diversity

2015 ◽  
Vol 21 (4) ◽  
Author(s):  
Catherine C. Machalaba ◽  
Sarah E. Elwood ◽  
Simona Forcella ◽  
Kristine M. Smith ◽  
Keith Hamilton ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Birds ◽  
Influenza Surveillance ◽  
Viral Diversity

scholarly journals Long-Term Effect of Serial Infections with H13 and H16 Low-Pathogenic Avian Influenza Viruses in Black-Headed Gulls

2015 ◽  
Vol 89 (22) ◽  
pp. 11507-11522 ◽  
Author(s):  
Josanne H. Verhagen ◽  
Ursula Höfle ◽  
Geert van Amerongen ◽  
Marco van de Bildt ◽  
Frank Majoor ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Birds ◽  
Influenza Viruses ◽  
First Year ◽  
Avian Influenza Viruses ◽  
Pathogenic Avian Influenza ◽  
Virus Excretion ◽  
Second Year ◽  
Low Pathogenic Avian Influenza

ABSTRACTInfections of domestic and wild birds with low-pathogenic avian influenza viruses (LPAIVs) have been associated with protective immunity to subsequent infection. However, the degree and duration of immunity in wild birds from previous LPAIV infection, by the same or a different subtype, are poorly understood. Therefore, we inoculated H13N2 (A/black-headed gull/Netherlands/7/2009) and H16N3 (A/black-headed gull/Netherlands/26/2009) LPAIVs into black-headed gulls (Chroicocephalus ridibundus), their natural host species, and measured the long-term immune response and protection against one or two reinfections over a period of >1 year. This is the typical interval between LPAIV epizootics in wild birds. Reinfection with the same virus resulted in progressively less virus excretion, with complete abrogation of virus excretion after two infections for H13 but not H16. However, reinfection with the other virus affected neither the level nor duration of virus excretion. Virus excretion by immunologically naive birds did not differ in total levels of excreted H13 or H16 virus between first- and second-year birds, but the duration of H13 excretion was shorter for second-year birds. Furthermore, serum antibody levels did not correlate with protection against LPAIV infection. LPAIV-infected gulls showed no clinical signs of disease. These results imply that the epidemiological cycles of H13 and H16 in black-headed gulls are relatively independent from each other and depend mainly on infection of first-year birds.IMPORTANCELow-pathogenic avian influenza viruses (LPAIVs) circulate mainly in wild water birds but are occasionally transmitted to other species, including humans, where they cause subclinical to fatal disease. To date, the effect of LPAIV-specific immunity on the epidemiology of LPAIV in wild birds is poorly understood. In this study, we investigated the effect of H13 and H16 LPAIV infection in black-headed gulls on susceptibility and virus excretion of subsequent infection with the same or the other virus within the same breeding season and between breeding seasons. These are the only two LPAIV hemagglutinin subtypes predominating in this species. The findings suggest that H13 and H16 LPAIV cycles in black-headed gull populations are independent of each other, indicate the importance of first-year birds in LPAIV epidemiology, and emphasize the need for alternatives to avian influenza virus (AIV)-specific serum antibodies as evidence of past LPAIV infection and correlates of protection against LPAIV infection in wild birds.

scholarly journals Influenza surveillance in wild birds in Australia

2011 ◽  
Vol 32 (1) ◽  
pp. 48
Keyword(s):  
Avian Influenza ◽  
Wild Birds ◽  
Influenza Viruses ◽  
Influenza Surveillance ◽  
Aquatic Birds ◽  
Avian Influenza Viruses ◽  
Natural Reservoir

Wild aquatic birds are the natural reservoir for avian influenza viruses (AIVs)1. Increased surveillance has revealed that Australia has its own lineages of these AIVs.

Sign in / Sign up

Export Citation Format

Share Document