7 results on '"wild aquatic birds"'
Search Results
2. Longitudinal Analysis of Influenza A(H5) Sero-Surveillance in Myanmar Ducks, 2006–2019
- Author
-
Aurélie Brioudes, Hla Hla Mon, Cho Cho Su Mon, Htay Htay Win, David Hadrill, Wing Sum Mok, Leslie Sims, Maung Maung Kyin, Ye Tun Win, Min Thein Maw, and Way Zin Thein
- Subjects
Microbiology (medical) ,Veterinary medicine ,LPAIV ,QH301-705.5 ,serology ,Myanmar ,Biology ,medicine.disease_cause ,Microbiology ,Virus ,Article ,Serology ,wild aquatic birds ,Virology ,medicine ,Influenza A virus ,Seroconversion ,Biology (General) ,Transmission (medicine) ,ecological interface ,Outbreak ,Influenza a ,Influenza A virus subtype H5N1 ,H5 avian influenza ,influenza a virus ,surveillance ,HPAIV ,domestic ducks - Abstract
Between 2006 and 2019, serological surveys in unvaccinated domestic ducks reared outdoors in Myanmar were performed, using a haemagglutination inhibition (HI) test, to confirm H5 avian influenza virus circulation and assess temporal and spatial distribution. Positive test results occurred every year that samples were collected. The annual proportion of positive farms ranged from 7.1% to 77.2%. The results revealed silent/sub-clinical influenza A (H5) virus circulation, even in years and States/Regions with no highly pathogenic avian influenza (HPAI) outbreaks reported. Further analysis of the 2018/19 results revealed considerable differences in seroconversion rates between four targeted States/Regions and between years, and showed seroconversion before and during the sampling period. By the end of the trial, a high proportion of farms were seronegative, leaving birds vulnerable to infection when sold. Positive results likely indicate infection with Gs/GD/96-lineage H5Nx HPAI viruses rather than other H5 subtype low-pathogenicity avian influenza viruses. The findings suggested persistent, but intermittent, circulation of Gs/GD/96-lineage H5Nx HPAI viruses in domestic ducks, despite the veterinary services’ outbreak detection and control efforts. The role of wild birds in transmission remains unclear but there is potential for spill-over in both directions. The findings of this study assist the national authorities in the design of appropriate, holistic avian influenza control programs.
- Published
- 2021
3. Novel Reassortant Clade 2.3.4.4 Avian Influenza A(H5N8) Virus in Wild Aquatic Birds, Russia, 2016
- Author
-
Dong-Hun Lee, Kirill Sharshov, David E. Swayne, Olga Kurskaya, Ivan Sobolev, Marsel Kabilov, Alexander Alekseev, Victor Irza, and Alexander Shestopalov
- Subjects
Highly pathogenic avian influenza virus ,HPAI ,reassortment ,Russia ,Siberia ,wild aquatic birds ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
The emergence of novel avian influenza viruses in migratory birds is of concern because of the potential for virus dissemination during fall migration. We report the identification of novel highly pathogenic avian influenza viruses of subtype H5N8, clade 2.3.4.4, and their reassortment with other avian influenza viruses in waterfowl and shorebirds of Siberia.
- Published
- 2017
- Full Text
- View/download PDF
4. Highly Pathogenic Avian Influenza A(H5N8) Virus in Wild Migratory Birds, Qinghai Lake, China
- Author
-
Yubang He, Di Liu, Hanzhong Wang, Mingxin Li, Laixing Li, Haizhou Liu, Jianjun Chen, Jianqing Sun, Juxiang Liu, Yuhai Bi, George F. Gao, Weifeng Shi, Gary Wong, and Quanjiao Chen
- Subjects
0301 basic medicine ,Microbiology (medical) ,China ,Charadriiformes ,Epidemiology ,viruses ,Reassortment ,lcsh:Medicine ,Animals, Wild ,HPAI ,medicine.disease_cause ,H5N1 genetic structure ,Virus ,Disease Outbreaks ,Qinghai Lake ,wild aquatic birds ,lcsh:Infectious and parasitic diseases ,03 medical and health sciences ,H5N8 ,Anseriformes ,Reassortant Viruses ,medicine ,Animals ,Influenza A Virus, H5N8 Subtype ,lcsh:RC109-216 ,Phylogeny ,wild migratory birds ,Bird Diseases ,bird diseases ,biology ,phylogenetic analysis ,lcsh:R ,Dispatch ,Highly pathogenic avian influenza virus ,Highly Pathogenic Avian Influenza A(H5N8) Virus in Wild Migratory Birds, Qinghai Lake, China ,biology.organism_classification ,Virology ,Influenza A virus subtype H5N1 ,3. Good health ,030104 developmental biology ,Infectious Diseases ,influenza in birds ,Animal Migration ,reassortment ,influenza - Abstract
In May 2016, a highly pathogenic avian influenza A(H5N8) virus strain caused deaths among 3 species of wild migratory birds in Qinghai Lake, China. Genetic analysis showed that the novel reassortant virus belongs to group B H5N8 viruses and that the reassortment events likely occurred in early 2016.
- Published
- 2017
5. Novel Reassortant Clade 2.3.4.4 Avian Influenza A(H5N8) Virus in Wild Aquatic Birds, Russia, 2016
- Author
-
Alexander Alekseev, David E. Swayne, Dong-Hun Lee, Kirill Sharshov, Ivan Sobolev, Olga Kurskaya, Victor Irza, Alexander Shestopalov, and Marsel R. Kabilov
- Subjects
0301 basic medicine ,Genes, Viral ,Epidemiology ,viruses ,Reassortment ,lcsh:Medicine ,HPAI ,medicine.disease_cause ,Disease Outbreaks ,Russia ,wild aquatic birds ,Waterfowl ,Influenza A Virus, H5N8 Subtype ,Public Health Surveillance ,Clade ,Phylogeny ,Bird Diseases ,biology ,virus diseases ,Infectious Diseases ,Novel Reassortant Clade 2.3.4.4 Avian Influenza A(H5N8) Virus in Wild Aquatic Birds, Russia, 2016 ,influenza ,Reassortant Viruses ,Microbiology (medical) ,animal structures ,Animals, Wild ,H5N1 genetic structure ,History, 21st Century ,Virus ,lcsh:Infectious and parasitic diseases ,Birds ,03 medical and health sciences ,medicine ,Research Letter ,Animals ,lcsh:RC109-216 ,clade 2.3.4.4 ,bird diseases ,phylogenetic analysis ,lcsh:R ,Highly pathogenic avian influenza virus ,biology.organism_classification ,Virology ,Influenza A virus subtype H5N1 ,Siberia ,030104 developmental biology ,influenza in birds ,reassortment - Abstract
The emergence of novel avian influenza viruses in migratory birds is of concern because of the potential for virus dissemination during fall migration. We report the identification of novel highly pathogenic avian influenza viruses of subtype H5N8, clade 2.3.4.4, and their reassortment with other avian influenza viruses in waterfowl and shorebirds of Siberia.
- Published
- 2017
6. Investigating avian influenza infection hotspots in old-world shorebirds
- Author
-
Tim Dodman, Nicolas Gaidet, Mduduzi Ndlovu, Celia Abolnik, Saliha Hammoumi, Sasan Fereidouni, Renata Servan de Almeida, Vladimir Grosbois, Julien Cappelle, Josphine Mundava, Alexandre Caron, Giovanni Cattoli, Gilles Balança, Graeme S. Cumming, Ahmed Bezeid El Mamy, Bouba Fofana, Scott H. Newman, Patricia Gil, Renata Hurtado, Yelli Diawara, Animal et gestion intégrée des risques (UPR AGIRs), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Ctr Natl Elevage & Rech Vet, Partenaires INRAE, University of Cape Town, Institut National de la Recherche Agronomique (INRA), Contrôle des maladies animales exotiques et émergentes (UMR CMAEE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA), Friedrich-Loeffler-Institut (FLI), Ist Zooprofilatt Sperle Venezie, University of Pretoria [South Africa], National University of Science and Technology [Bulawayo], Direct Natl Eaux & Forets Mali, Universidade de São Paulo (USP), Food and Agriculture Organization, Wetlands International, French Ministry of Foreign Affairs, Technical Cooperation Programme of the Food and Agricultural Organization of the United Nations (UN-FAO) through government of France, Technical Cooperation Programme of the Food and Agricultural Organization of the United Nations (UN-FAO) through government of Sweden, USAID - and Wildlife Conservation Society, EU, Percy FitzPatrick Institute of African Ornithology, and Faculty of Science
- Subjects
Viral Diseases ,Identification ,Delta ecosystems ,[SDV]Life Sciences [q-bio] ,animal diseases ,lcsh:Medicine ,Antibodies, Viral ,medicine.disease_cause ,L73 - Maladies des animaux ,Oiseau aquatique ,Arenaria interpres ,0403 veterinary science ,Hôte ,Charadriiformes ,Ornithology ,Zoonoses ,Flyway ,WILD AQUATIC BIRDS ,Turnstone ,Influenza A virus ,Foraging ,Enzyme-linked immunoassays ,lcsh:Science ,Avian influenza A viruses ,0303 health sciences ,Multidisciplinary ,biology ,Enquête ,Zoonotic Diseases ,Ecology ,virus diseases ,04 agricultural and veterinary sciences ,Europe ,Ducks ,Vecteur de maladie ,Veterinary Diseases ,Medicine ,Infectious diseases ,Public Health ,Seasons ,L72 - Organismes nuisibles des animaux ,Research Article ,Disease Ecology ,AFRICA ,Asia ,Old World ,STRATEGIES ,Sandpiper ,TRANSMISSION ,040301 veterinary sciences ,Animals, Wild ,Animal migration ,A VIRUSES ,Antibodies ,DELAWARE BAY ,Birds ,Animal Influenza ,03 medical and health sciences ,Species Specificity ,WADERS ,SURVEILLANCE ,medicine ,Animals ,Influenzavirus aviaire ,Biology ,030304 developmental biology ,PATTERNS ,GENE ,lcsh:R ,Migration animale ,Animal sauvage ,Delaware ,biology.organism_classification ,Influenza ,Influenza A virus subtype H5N1 ,Animal sexual behavior ,Influenza in Birds ,Veterinary Science ,lcsh:Q ,Zoology - Abstract
International audience; Heterogeneity in the transmission rates of pathogens across hosts or environments may produce disease hotspots, which are defined as specific sites, times or species associations in which the infection rate is consistently elevated. Hotspots for avian influenza virus (AIV) in wild birds are largely unstudied and poorly understood. A striking feature is the existence of a unique but consistent AIV hotspot in shorebirds (Charadriiformes) associated with a single species at a specific location and time (ruddy turnstone Arenaria interpres at Delaware Bay, USA, in May). This unique case, though a valuable reference, limits our capacity to explore and understand the general properties of AIV hotspots in shorebirds. Unfortunately, relatively few shorebirds have been sampled outside Delaware Bay and they belong to only a few shorebird families; there also has been a lack of consistent oropharyngeal sampling as a complement to cloacal sampling. In this study we looked for AIV hotspots associated with other shorebird species and/or with some of the larger congregation sites of shorebirds in the old world. We assembled and analysed a regionally extensive dataset of AIV prevalence from 69 shorebird species sampled in 25 countries across Africa and Western Eurasia. Despite this diverse and extensive coverage we did not detect any new shorebird AIV hotspots. Neither large shorebird congregation sites nor the ruddy turnstone were consistently associated with AIV hotspots. We did, however, find a low but widespread circulation of AIV in shorebirds that contrast with the absence of AIV previously reported in shorebirds in Europe. A very high AIV antibody prevalence coupled to a low infection rate was found in both first-year and adult birds of two migratory sandpiper species, suggesting the potential existence of an AIV hotspot along their migratory flyway that is yet to be discovered.
- Published
- 2012
7. Influenza surveillance in birds in Italian wetlands (1992-1998): is there a host restricted circulation of influenza viruses in sympatric ducks and coots?
- Author
-
Isabella Donatelli, M. Tollis, Emanuela Foni, G. Barigazzi, Laura Campitelli, E. Raffini, Vittorio Guberti, M. A. De Marco, L. Di Trani, Mauro Delogu, De Marco M.A., Campitelli L., Foni E., Raffini E., Barigazzi G., Delogu M., Guberti V., Di Trani L., Tollis M., and Donatelli I.
- Subjects
viruses ,Enzyme-Linked Immunosorbent Assay ,Biology ,medicine.disease_cause ,Antibodies, Viral ,Microbiology ,Virus ,Serology ,Cloaca ,Orthomyxoviridae Infections ,Seroepidemiologic Studies ,WILD AQUATIC BIRDS ,Influenza A virus ,medicine ,Coot ,Seroprevalence ,Animals ,Ecosystem ,Disease Reservoirs ,General Veterinary ,VIROLOGICAL SURVEY ,Host (biology) ,Bird Diseases ,virus diseases ,General Medicine ,Hemagglutination Inhibition Tests ,biology.organism_classification ,Virology ,Influenza A virus subtype H5N1 ,Ducks ,Italy ,SEROLOGICAL SURVEY ,HA SUBTYPE CIRCULATION ,Viral disease ,AVIAN INFLUENZA - Abstract
We report the results of a 6-year serological and virological monitoring performed in ducks and coots in Italy, in order to assess the degree of influenza A virus circulation in these birds during wintering. A total of 1039 sera collected from 1992 to 1998 was screened by a double antibody sandwich blocking ELISA (NP-ELISA): seroprevalence of antibodies to influenza A viruses was significantly higher in ducks compared to coots (52.2% vs. 7.1%, respectively). The hemagglutination-inhibition (HI) assay, performed on NP-ELISA positive sera, showed that 16.9% of these duck sera and 33.3% of these coot sera had antibodies to at least one influenza virus HA subtype: ducks showed HI antibodies against most of the HA subtypes, except for the H3, H4, H7, and H12; coots were seropositive to the H3 and H10 subtypes, only. From 1993 to 1998, 22 virus strains were obtained from 802 cloacal swabs, with an overall virus isolation frequency of 2.7%. Viruses belonging to the H1N1 subtype were by far the most commonly circulating strains (18/22) and were isolated mainly from ducks (17/18). The remaining viruses were representative of the H10N8, H5N2 and H3N8 subtypes. Our data indicate some differences between influenza A virus circulation in sympatric ducks and coots and a significant antigenic diversity between some reference strains and viruses recently isolated in Italy.
- Published
- 2003
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.