共查询到20条相似文献,搜索用时 15 毫秒
1.
Munster VJ Wallensten A Baas C Rimmelzwaan GF Schutten M Olsen B Osterhaus AD Fouchier RA 《Emerging infectious diseases》2005,11(10):1545-1551
Outbreaks of highly pathogenic avian influenza (HPAI), which originate in poultry upon transmission of low pathogenic viruses from wild birds, have occurred relatively frequently in the last decade. During our ongoing surveillance studies in wild birds, we isolated several influenza A viruses of hemagglutinin subtype H5 and H7 that contain various neuraminidase subtypes. For each of the recorded H5 and H7 HPAI outbreaks in Europe since 1997, our collection contained closely related virus isolates recovered from wild birds, as determined by sequencing and phylogenetic analyses of the hemagglutinin gene and antigenic characterization of the hemagglutinin glycoprotein. The minor genetic and antigenic diversity between the viruses recovered from wild birds and those causing HPAI outbreaks indicates that influenza A virus surveillance studies in wild birds can help generate prototypic vaccine candidates and design and evaluate diagnostic tests, before outbreaks occur in animals and humans. 相似文献
2.
Peng Yang Xinghuo Pang Ying Deng Chunna Ma Daitao Zhang Ying Sun Weixian Shi Guilan Lu Jiachen Zhao Yimeng Liu Xiaomin Peng Yi Tian Haikun Qian Lijuan Chen Quanyi Wang 《Emerging infectious diseases》2013,19(12):2041-2043
During surveillance for pneumonia of unknown etiology and sentinel hospital–based surveillance in Beijing, China, we detected avian influenza A(H7N9) virus infection in 4 persons who had pneumonia, influenza-like illness, or asymptomatic infections. Samples from poultry workers, associated poultry environments, and wild birds suggest that this virus might not be present in Beijing. 相似文献
3.
Hyun-Mi Kang Eun-Kyoung Lee Byung-Min Song Jipseol Jeong Jun-Gu Choi Joojin Jeong Oun-Kyong Moon Hachung Yoon Youngmi Cho Young-Myong Kang Hee-Soo Lee Youn-Jeong Lee 《Emerging infectious diseases》2015,21(2):298-304
An outbreak of highly pathogenic avian influenza, caused by a novel reassortant influenza A (H5N8) virus, occurred among poultry and wild birds in South Korea in 2014. The aim of this study was to evaluate the pathogenesis in and mode of transmission of this virus among domestic and wild ducks. Three of the viruses had similar pathogenicity among infected domestic ducks: the H5N8 viruses were moderately pathogenic (0%–20% mortality rate); in wild mallard ducks, the H5N8 and H5N1 viruses did not cause severe illness or death; viral replication and shedding were greater in H5N8-infected mallards than in H5N1-infected mallards. Identification of H5N8 viruses in birds exposed to infected domestic ducks and mallards indicated that the viruses could spread by contact. We propose active surveillance to support prevention of the spread of this virus among wild birds and poultry, especially domestic ducks. 相似文献
4.
Nicolas Bravo-Vasquez Jiangwei Yao Pedro Jimenez-Bluhm Victoria Meliopoulos Pamela Freiden Bridgett Sharp Leonardo Estrada Amy Davis Sean Cherry Brandi Livingston Angela Danner Stacey Schultz-Cherry Christopher Hamilton-West 《Emerging infectious diseases》2020,26(12):2887
Since their discovery in the United States in 1963, outbreaks of infection with equine influenza virus (H3N8) have been associated with serious respiratory disease in horses worldwide. Genomic analysis suggests that equine H3 viruses are of an avian lineage, likely originating in wild birds. Equine-like internal genes have been identified in avian influenza viruses isolated from wild birds in the Southern Cone of South America. However, an equine-like H3 hemagglutinin has not been identified. We isolated 6 distinct H3 viruses from wild birds in Chile that have hemagglutinin, nucleoprotein, nonstructural protein 1, and polymerase acidic genes with high nucleotide homology to the 1963 H3N8 equine influenza virus lineage. Despite the nucleotide similarity, viruses from Chile were antigenically more closely related to avian viruses and transmitted effectively in chickens, suggesting adaptation to the avian host. These studies provide the initial demonstration that equine-like H3 hemagglutinin continues to circulate in a wild bird reservoir. 相似文献
5.
Atanaska Marinova-Petkova Georgi Georgiev Patrick Seiler Daniel Darnell John Franks Scott Krauss Richard J. Webby Robert G. Webster 《Emerging infectious diseases》2012,18(10):1596-1602
On March 15, 2010, a highly pathogenic avian influenza virus was isolated from the carcass of a common buzzard (Buteo buteo) in Bulgaria. Phylogenetic analyses of the virus showed a close genetic relationship with influenza virus A (H5N1) clade 2.3.2.1 viruses isolated from wild birds in the Tyva Republic and Mongolia during 2009–2010. Designated A/common buzzard/Bulgaria/38WB/2010, this strain was highly pathogenic in chickens but had low pathogenicity in mice and ferrets and no molecular markers of increased pathogenicity in mammals. The establishment of clade 2.3.2.1 highly pathogenic avian influenza viruses of the H5N1 subtype in wild birds in Europe would increase the likelihood of health threats to humans and poultry in the region. 相似文献
6.
7.
Christopher S. Jennelle Michelle Carstensen Erik C. Hildebrand Louis Cornicelli Paul Wolf Daniel A. Grear Hon S. Ip Kaci K. Vandalen Larissa A. Minicucci 《Emerging infectious diseases》2016,22(7):1278-1282
In 2015, a major outbreak of highly pathogenic avian influenza virus (HPAIV) infection devastated poultry facilities in Minnesota, USA. To understand the potential role of wild birds, we tested 3,139 waterfowl fecal samples and 104 sick and dead birds during March 9–June 4, 2015. HPAIV was isolated from a Cooper’s hawk but not from waterfowl fecal samples. 相似文献
8.
Movements of birds and avian influenza from Asia into Alaska 总被引:2,自引:0,他引:2
Winker K McCracken KG Gibson DD Pruett CL Meier R Huettmann F Wege M Kulikova IV Zhuravlev YN Perdue ML Spackman E Suarez DL Swayne DE 《Emerging infectious diseases》2007,13(4):547-552
Asian-origin avian influenza (AI) viruses are spread in part by migratory birds. In Alaska, diverse avian hosts from Asia and the Americas overlap in a region of intercontinental avifaunal mixing. This region is hypothesized to be a zone of Asia-to-America virus transfer because birds there can mingle in waters contaminated by wild-bird-origin AI viruses. Our 7 years of AI virus surveillance among waterfowl and shorebirds in this region (1998-2004; 8,254 samples) showed remarkably low infection rates (0.06%). Our findings suggest an Arctic effect on viral ecology, caused perhaps by low ecosystem productivity and low host densities relative to available water. Combined with a synthesis of avian diversity and abundance, intercontinental host movements, and genetic analyses, our results suggest that the risk and probably the frequency of intercontinental virus transfer in this region are relatively low. 相似文献
9.
Bruno M. Ghersi David L. Blazes Eliana Icochea Rosa I. Gonzalez Tadeusz Kochel Yeny Tinoco Merly M. Sovero Stephen Lindstrom Bo Shu Alexander Klimov Armando E. Gonzalez Joel M. Montgomery 《Emerging infectious diseases》2009,15(6):935-938
To determine genotypes of avian influenza virus circulating among wild birds in South America, we collected and tested environmental fecal samples from birds along the coast of Peru, June 2006–December 2007. The 9 isolates recovered represented 4 low-pathogenicity avian influenza strains: subtypes H3N8, H4N5, H10N9, and H13N2. 相似文献
10.
Anja Globig Anette Baumer Sandra Revilla-Fernández Martin Beer Eveline Wodak Maria Fink Norbert Greber Timm C. Harder Hendrik Wilking Iris Brunhart Doris Matthes Ulf Kraatz Peter Strunk Wolfgang Fiedler Sasan R. Fereidouni Christoph Staubach Franz J. Conraths Chris Griot Thomas C. Mettenleiter Katharina D.C. St?rk 《Emerging infectious diseases》2009,15(10):1633-1636
To determine the effectiveness of ducks as sentinels for avian influenza virus (AIV) infection, we placed mallards in contact with wild birds at resting sites in Germany, Austria, and Switzerland. Infections of sentinel birds with different AIV subtypes confirmed the value of such surveillance for AIV monitoring. 相似文献
11.
Jolianne M. Rijks Hanna Hesselink Pim Lollinga Renee Wesselman Pier Prins Eefke Weesendorp Marc Engelsma Rene Heutink Frank Harders Marja Kik Harry Rozendaal Hans van den Kerkhof Nancy Beerens 《Emerging infectious diseases》2021,27(11):2960
We detected infection with highly pathogenic avian influenza A(H5N1) virus clade 2.3.4.4b in 2 red fox (Vulpes vulpes) cubs found in the wild with neurologic signs in the Netherlands. The virus is related to avian influenza viruses found in wild birds in the same area. 相似文献
12.
Xianbin Li Zhong Zhang Ailian Yu Simon Y. W. Ho Michael J. Carr Weimin Zheng Yanzhou Zhang Chaodong Zhu Fumin Lei Weifeng Shi 《Emerging infectious diseases》2014,20(8):1287-1295
An understanding of the global migration dynamics of highly pathogenic avian influenza A(H5N1) virus is helpful for surveillance and disease prevention. To characterize the migration network of this virus, we used genetic analysis, which supported a global persistence model in which each of 9 regions acts to some extent as a source. Siberia is the major hub for the dispersal of the virus. Southeast Asia and Africa are major sources of genetically and antigenically novel strains. We found evidence of local persistence of the virus in Southeast Asia and Africa, which is rare for human influenza A viruses. The differences in migration dynamics between avian and human influenza viruses might help with the design of region-specific surveillance efforts and the selection of vaccine candidates. 相似文献
13.
The last decade has seen a marked increase in highly pathogenic avian influenza (HPAI) outbreaks around the world. This increase and the zoonotic potential of some of the HPAI viruses are of great concern to animal and public health as well as biodiversity. It is now well recognized that global influenza virus surveillance in wild birds can play a key role in the early recognition of and preparation for these threats. Here we summarize the most important results from our wild bird surveillance studies in Northern Europe over the last 8 years and conclude that surveillance studies in wild birds are indeed useful to generate prototypic vaccine candidates and to design and evaluate diagnostic tests, prior to the occurrence of outbreaks in animals and humans. Through this 8-year experience we also identified gaps in our knowledge on influenza A viruses and their natural hosts which may help to assist in the design of improved surveillance studies. This is particularly relevant if wild bird surveillance studies are used as an "early warning system" for the arrival of the H5N1 HPAI virus in a country or region and to assess the risk posed by these viruses in general. 相似文献
14.
Camille Lebarbenchon Chris J. Feare Fran?ois Renaud Frédéric Thomas Michel Gauthier-Clerc 《Emerging infectious diseases》2010,16(7):1057-1062
Understanding of ecologic factors favoring emergence and maintenance of highly pathogenic avian influenza (HPAI) viruses is limited. Although low pathogenic avian influenza viruses persist and evolve in wild populations, HPAI viruses evolve in domestic birds and cause economically serious epizootics that only occasionally infect wild populations. We propose that evolutionary ecology considerations can explain this apparent paradox. Host structure and transmission possibilities differ considerably between wild and domestic birds and are likely to be major determinants of virulence. Because viral fitness is highly dependent on host survival and dispersal in nature, virulent forms are unlikely to persist in wild populations if they kill hosts quickly or affect predation risk or migratory performance. Interhost transmission in water has evolved in low pathogenic influenza viruses in wild waterfowl populations. However, oropharyngeal shedding and transmission by aerosols appear more efficient for HPAI viruses among domestic birds. 相似文献
15.
Ghazi Kayali Ahmed Kandeil Rabeh El-Shesheny Ahmed S. Kayed Mokhtar M. Gomaa Asmaa M. Maatouq Mahmoud M. Shehata Yassmin Moatasim Ola Bagato Zhipeng Cai Adam Rubrum Mohamed A. Kutkat Pamela P. McKenzie Robert G. Webster Richard J. Webby Mohamed A. Ali 《Emerging infectious diseases》2014,20(4):542-551
16.
Martha I. Nelson Rejane Schaefer Danielle Gava Maurício Egídio Cant?o Janice Reis Ciacci-Zanella 《Emerging infectious diseases》2015,21(8):1339-1347
The evolutionary origins of the influenza A(H1N1)pdm09 virus that caused the first outbreak of the 2009 pandemic in Mexico remain unclear, highlighting the lack of swine surveillance in Latin American countries. Although Brazil has one of the largest swine populations in the world, influenza was not thought to be endemic in Brazil’s swine until the major outbreaks of influenza A(H1N1)pdm09 in 2009. Through phylogenetic analysis of whole-genome sequences of influenza viruses of the H1N1, H1N2, and H3N2 subtypes collected in swine in Brazil during 2009–2012, we identified multiple previously uncharacterized influenza viruses of human seasonal H1N2 and H3N2 virus origin that have circulated undetected in swine for more than a decade. Viral diversity has further increased in Brazil through reassortment between co-circulating viruses, including A(H1N1)pdm09. The circulation of multiple divergent hemagglutinin lineages challenges the design of effective cross-protective vaccines and highlights the need for additional surveillance. 相似文献
17.
Hoye BJ Munster VJ Nishiura H Klaassen M Fouchier RA 《Emerging infectious diseases》2010,16(12):1827-1834
Recent demand for increased understanding of avian influenza virus in its natural hosts, together with the development of high-throughput diagnostics, has heralded a new era in wildlife disease surveillance. However, survey design, sampling, and interpretation in the context of host populations still present major challenges. We critically reviewed current surveillance to distill a series of considerations pertinent to avian influenza virus surveillance in wild birds, including consideration of what, when, where, and how many to sample in the context of survey objectives. Recognizing that wildlife disease surveillance is logistically and financially constrained, we discuss pragmatic alternatives for achieving probability-based sampling schemes that capture this host-pathogen system. We recommend hypothesis-driven surveillance through standardized, local surveys that are, in turn, strategically compiled over broad geographic areas. Rethinking the use of existing surveillance infrastructure can thereby greatly enhance our global understanding of avian influenza and other zoonotic diseases. 相似文献
18.
Ivan Sobolev Kirill Sharshov Nikita Dubovitskiy Olga Kurskaya Alexander Alekseev Sergey Leonov Yuriy Yushkov Victor Irza Andrey Komissarov Artem Fadeev Daria Danilenko Junki Mine Ryota Tsunekuni Yuko Uchida Takehiko Saito Alexander Shestopalov 《Emerging infectious diseases》2021,27(8):2224
Two variants of highly pathogenic avian influenza A(H5N8) virus were detected in dead poultry in Western Siberia, Russia, during August and September 2020. One variant was represented by viruses of clade 2.3.4.4b and the other by a novel reassortant between clade 2.3.4.4b and Eurasian low pathogenicity avian influenza viruses circulating in wild birds. 相似文献
19.
Avian influenza viruses in water birds, Africa 总被引:2,自引:0,他引:2
Gaidet N Dodman T Caron A Balança G Desvaux S Goutard F Cattoli G Lamarque F Hagemeijer W Monicat F 《Emerging infectious diseases》2007,13(4):626-629
We report the first large-scale surveillance of avian influenza viruses in water birds conducted in Africa. This study shows evidence of avian influenza viruses in wild birds, both Eurasian and Afro-tropical species, in several major wetlands of Africa. 相似文献
20.
Siembieda J Johnson CK Boyce W Sandrock C Cardona C 《Emerging infectious diseases》2008,14(7):1151-1153
To assess risk for human exposure to avian influenza viruses (AIV), we sampled California wild birds and marine mammals during October 2005-August 2007 and estimated human-wildlife contact. Waterfowl hunters were 8 times more likely to have contact with AIV-infected wildlife than were persons with casual or occupational exposures (p<0.0001). 相似文献