Results 61 to 70 of about 1,914 (161)

Serological Surveillance of Avian Influenza Virus Exposure Using Paired Sera Among Occupational Contacts in Taiwan, January–September 2025

Influenza and Other Respiratory Viruses, Volume 20, Issue 7, July 2026.
ABSTRACT In 2025, Taiwan implemented paired sera surveillance among occupational contacts of avian influenza viruses (AIVs). Of 122 contacts analyzed, 117 (95.9%) remained asymptomatic with high personal protective equipment compliance (91.8%). No seroconversion was detected against AIV A(H5N2) clade 2.3.4.4b. These findings suggest a low risk of human
Chieh‐Yu Lin, Tsung‐Pei Tsou, Po‐Wei Chu, Shu‐Er Yang, I‐Ling Yu, Yao‐Tsun Li, Ming‐Tsan Liu, Yi‐Chien Chih   +7 more
wiley   +1 more source

Novel Avian Influenza Virus (H5N1) Clade 2.3.4.4b Reassortants in Migratory Birds, China

Emerging Infectious Diseases, 2023
Two novel reassortant highly pathogenic avian influenza viruses (H5N1) clade 2.3.4.4b.2 were identified in dead migratory birds in China in November 2021. The viruses probably evolved among wild birds through different flyways connecting Europe and Asia.
Jing Yang, Chunge Zhang, Yue Yuan, Ju Sun, Lu Lu, Honglei Sun, Heting Sun, Dong Chu, Siyuan Qin, Jianjun Chen, Chengbo Zhang, Xiyan Hao, Weifeng Shi, Wenjun Liu, George F. Gao, Paul Digard, Samantha Lycett, Yuhai Bi   +17 more
openaire   +3 more sources

Quantitative Microbial Risk Assessment of Human H5N1 Infection From Consumption of Fluid Cow's Milk

Risk Analysis, Volume 46, Issue 7, July 2026.
ABSTRACT The spillover of H5N1 clade 2.3.4.4b into dairy cattle has raised concerns over the safety of fluid milk. While no foodborne infection has been reported in humans, this strain has infected at least 70 people, and milk from infected cows is known to be infected by ingestion of multiple other species.
Katherine J. Koebel, Ece Bulut, Samuel D. Alcaine, Aljoša Trmčić, Mohammed Nooruzzaman, Lina M. Covaleda, Diego G. Diel, Renata Ivanek   +7 more
wiley   +1 more source

Reassortment of newly emergent clade 2.3.4.4b A(H5N1) highly pathogenic avian influenza A viruses in Bangladesh

Emerging Microbes and Infections
Avian influenza active surveillance was conducted in Bangladesh from January 2022 to November 2023 in live-poultry markets (LPMs) and Tanguar Haor wetlands.
Subrata Barman, Jasmine C. M. Turner, M. Kamrul Hasan, Sharmin Akhtar, Trushar Jeevan, John Franks, David Walker, Nabanita Mukherjee, Patrick Seiler, Lisa Kercher, Pamela McKenzie, Robert G. Webster, Mohammed M. Feeroz, Richard J. Webby   +13 more
doaj   +1 more source

Avian influenza overview March–May 2026

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract Between 28 February and 4 June 2026, 949 highly pathogenic avian influenza (HPAI) A(H5) virus detections were reported in domestic (186) and wild (763) birds in 30 countries in Europe. The downward trend in the number of detections observed at the end of the previous reporting period continued and is expected to persist throughout the summer ...
European Food Safety Authority (EFSA), European Centre for Disease Prevention and Control (ECDC), European Union Reference Laboratory for Avian Influenza (EURL), Hubert Buczkowski, Mariette Ducatez, Alice Fusaro, Jose L Gonzales, Thijs Kuiken, Gražina Mirinavičiūtė, Karl Ståhl, Christoph Staubach, Olov Svartström, Calogero Terregino, Katriina Willgert, Evelyn Alarcón, Lisa Kohnle   +15 more
wiley   +1 more source

Antiviral Resistance in Influenza: Clinical and Public Health Implications

Influenza and Other Respiratory Viruses, Volume 20, Issue 6, June 2026.
ABSTRACT Timely antiviral treatment and prevention can diminish the morbidity and mortality caused by influenza seasonal, zoonotic, and pandemic infections. However, the emergence of antiviral resistance threatens the utility of available agents and sometimes contributes to poor clinical outcomes.
Jinghao Nicholas Ngiam, Matthew Chung Yi Koh, Frederick G. Hayden   +2 more
wiley   +1 more source

Host Species Contribution to the Spatiotemporal Dynamics of the 2024–2025 H5N1 Epidemic in Italy

Influenza and Other Respiratory Viruses, Volume 20, Issue 6, June 2026.
ABSTRACT This study uses a phylodynamic approach to investigate host species contribution in the spatiotemporal dynamics of the highly pathogenic avian influenza A(H5N1) viruses of clade 2.3.4.4b identified during the 2024–2025 epidemic in Italy.
Enrico Savegnago, Lara Cavicchio, Marta Dianati, Angela Salomoni, Bianca Zecchin, Alessandro Sartori, Edoardo Giussani, Ana Moreno, Gianpiero Zamperin, Elisa Palumbo, Alessia Schivo, Annalisa Salviato, Silvia Ormelli, Maria Varotto, Calogero Terregino, Isabella Monne, Alice Fusaro   +16 more
wiley   +1 more source

Surveillance of Migratory Shorebirds and Seabirds in 2024 in Australia Reveals Incursions of a Diversity of Low Pathogenicity Avian Influenza Viruses, but Not High Pathogenicity Avian Influenza H5N1

Influenza and Other Respiratory Viruses, Volume 20, Issue 6, June 2026.
ABSTRACT Background The current panzootic of high pathogenicity avian influenza (HPAI) H5N1 has been catastrophic for wildlife, and following substantial geographic spread, clade 2.3.4.4b is found in every region aside from Oceania. Herein, we report the results of our third year of targeted surveillance of incoming migratory seabirds and shorebirds ...
Michelle Wille, Robyn Atkinson, Ian G. Barr, Alexander L. Bond, David B. Boyle, Maureen Christie, Yi‐Mo Deng, Meagan L. Dewar, Tegan K. Douglas, Min He, Rosalind Jessop, Lindall R. Kidd, Hiske Klaassen, Jennifer L. Lavers, Hilda Lau, Ila Marks, Eric Miller, Matthew J. Neave, Tobias A. Ross, Vittoria Stevens, Duncan R. Sutherland, Marcel Klaassen   +21 more
wiley   +1 more source

Emerging Highly Pathogenic Avian Influenza H5N1 Clade 2.3.4.4b Causes Neurological Disease and Mortality in Scavenging Ducks in Bangladesh

Veterinary Sciences
Scavenging domestic ducks significantly contribute to the transmission and maintenance of highly pathogenic H5N1 clade 2.3.4.4b avian influenza viruses in Bangladesh, a strain of growing global concern due to its broad host range, high pathogenicity, and
Rokshana Parvin, Sumyea Binta Helal, Md Mohi Uddin, Shadia Tasnim, Md. Riabbel Hossain, Rupaida Akter Shila, Jahan Ara Begum, Mohammed Nooruzzaman, Ann Kathrin Ahrens, Timm Harder, Emdadul Haque Chowdhury   +10 more
doaj   +1 more source

Immunopathogenesis of lethal H5N1 avian influenza virus clade 2.3.4.4b infection in macaques

Immunity
The H5N1 avian influenza virus clade 2.3.4.4b outbreak represents a major pandemic threat for humans, with some reported cases of severe and fatal respiratory illness. A key unanswered question is the pathogenesis of severe H5N1 disease following respiratory infection.
Hanne Andersen, Malika Aid, Jonathan J. Stone, Claire E. Lyons, Autumn Berlied, Joseph Nkolola, Ninaad Lasrado, Max Peterson, Laurent Pessaint, Christopher Kitajewski, Jake Yalley-Ogunro, Maciel Porto, Rebecca Stone, Mehtap Cabus, Daniel Valentin, Alex Van Ry, Brandon Narvaez, Tatyana Orekov, Swagata Kar, Elyse Teow, Katelyn Kouneski, Abismel Ferreira, Jason Velasco, Robert Campbell, Colin Henderson, Wilfred Beah, Grishma Patel, Brad Finneyfrock, Anthony Cook, Soumen Paul, Joost Haasnoot, Lisbeth Ramirez-Carvajal, Martin H. Koldijk, Sagrario Arias Rivas, Clarissa M. Koch, Jaap Goudsmit, Mark G. Lewis, Amanda J. Martinot, Dan H. Barouch   +38 more
openaire   +2 more sources