Avian Influenza A(H9N2) Virus Transmission across Chicken Production and Distribution Networks, Vietnam

Emerging infectious diseases 2026 Open access

Read full text
Authors: Mathew Hennessey, Thuy Hoang Thi, Jayna Raghwani, Younjung Kim, Hoa Thi Thanh Pham, Trang Huyen Nguyen, Hung Quoc Nguyen, Joshua G. Lynton-Jenkins, Ashley C. Banyard, Ian H. Brown, Joe James, Tom Lewis
+8 more Nicola S. Lewis, Dirk Pfeiffer, Fiona Tomley, Damer P. Blake, Ngoc Pham Thi, Anne Conan, Vuong Nghia Bui, Guillaume Fournié
DOI: 10.3201/eid3202.251416
Cited by: 1
References: 10

Abstract

In northern Vietnam, during March 2021-March 2022, prevalence of influenza A(H9N2) in chickens was higher in distribution facilities than on farms and varied between facility types. Phylogenetic analysis indicated extensive viral mixing along networks of chicken production and distribution, highlighting a need for risk mitigation across the entire network.

Fields of Study & Subjects

Influenza Virus Research Studies Respiratory viral infections research Virology and Viral Diseases

Publication details

Journal / source
Emerging infectious diseases
Publisher
Centers for Disease Control and Prevention (CDC)
Volume
32
Issue
2
Pages
259–264
Publication date
1 February 2026
Language
EN