tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2026 Feb;32(2):259-264.
doi: 10.3201/eid3202.251416.
Avian Influenza A(H9N2) Virus Transmission across Chicken Production and Distribution Networks, Vietnam
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, Nicola S Lewis, Dirk Pfeiffer, Fiona Tomley, Damer Blake, Ngoc Pham Thi, Anne Conan, Vuong Nghia Bui, Guillaume Fournié
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.
Keywords: H9N2; Vietnam; avian influenza; influenza; respiratory infections; viruses; zoonoses.
. 2026 Feb;32(2):259-264.
doi: 10.3201/eid3202.251416.
Avian Influenza A(H9N2) Virus Transmission across Chicken Production and Distribution Networks, Vietnam
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, Nicola S Lewis, Dirk Pfeiffer, Fiona Tomley, Damer Blake, Ngoc Pham Thi, Anne Conan, Vuong Nghia Bui, Guillaume Fournié
- PMID: 41714855
- DOI: 10.3201/eid3202.251416
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.
Keywords: H9N2; Vietnam; avian influenza; influenza; respiratory infections; viruses; zoonoses.