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Molecular Epidemiology and Evolution of Swine Influenza A Viruses, Vietnam, 2020–2024

VanderWaal  K, Deen  J. Global trends in infectious diseases of swine. Proc Natl Acad Sci U S A. 2018;115:11495–500. DOIPubMedGoogle Scholar

Nelson  MI, Worobey  M. Origins of the 1918 pandemic: revisiting the swine “mixing vessel” hypothesis. Am J Epidemiol. 2018;187:2498–502. DOIPubMedGoogle Scholar

Smith  GJD, Vijaykrishna  D, Bahl  J, Lycett  SJ, Worobey  M, Pybus  OG, et al. Origins and evolutionary genomics of the 2009 swine-origin H1N1 influenza A epidemic. Nature. 2009;459:1122–5. DOIPubMedGoogle Scholar

Anderson  TK, Chang  J, Arendsee  ZW, Venkatesh  D, Souza  CK, Kimble  JB, et al. Swine influenza A viruses and the tangled relationship with humans. Cold Spring Harb Perspect Med. 2021;11:a038737. DOIPubMedGoogle Scholar

Nelson  MI, Stratton  J, Killian  ML, Janas-Martindale  A, Vincent  AL. Continual reintroduction of human pandemic H1N1 influenza A viruses into swine in the United States, 2009 to 2014. J Virol. 2015;89:6218–26. DOIPubMedGoogle Scholar

Nelson  MI, Viboud  C, Vincent  AL, Culhane  MR, Detmer  SE, Wentworth  DE, et al. Global migration of influenza A viruses in swine. Nat Commun. 2015;6:6696. DOIPubMedGoogle Scholar

Zhu  H, Webby  R, Lam  TTY, Smith  DK, Peiris  JSM, Guan  Y. History of swine influenza viruses in Asia. Curr Top Microbiol Immunol. 2013;370:57–68. DOIPubMedGoogle Scholar

Baudon  E, Chu  DKW, Tung  DD, Thi Nga  P, Vu Mai Phuong  H, Le Khanh Hang  N, et al. Swine influenza viruses in Northern Vietnam in 2013–2014. Emerg Microbes Infect. 2018;7:123. DOIPubMedGoogle Scholar

Cheung  J, Bui  AN, Younas  S, Edwards  KM, Nguyen  HQ, Pham  NT, et al. Long-term epidemiology and evolution of swine influenza viruses, Vietnam. Emerg Infect Dis. 2023;29:1397–406. DOIPubMedGoogle Scholar

Katoh  K, Standley  DM. MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Mol Biol Evol. 2013;30:772–80. DOIPubMedGoogle Scholar

Minh  BQ, Schmidt  HA, Chernomor  O, Schrempf  D, Woodhams  MD, von Haeseler  A, et al. IQ-TREE 2: new models and efficient methods for phylogenetic inference in the genomic era. Mol Biol Evol. 2020;37:1530–4. DOIPubMedGoogle Scholar

Guindon  S, Dufayard  J-F, Lefort  V, Anisimova  M, Hordijk  W, Gascuel  O. New algorithms and methods to estimate maximum-likelihood phylogenies: assessing the performance of PhyML 3.0. Syst Biol. 2010;59:307–21. DOIPubMedGoogle Scholar

Sagulenko  P, Puller  V, Neher  RA. TreeTime: maximum-likelihood phylodynamic analysis. Virus Evol. 2018;4:vex042. DOIPubMedGoogle Scholar

OFFLU. OFFLU swine influenza report July 2024 to December 2024, 2025 [cited 2025 Oct 28]. https://offlu.org/technical-activities/february-2025-swine-influenza

Ishikawa  SA, Zhukova  A, Iwasaki  W, Gascuel  O. A fast likelihood method to reconstruct and visualize ancestral scenarios. Mol Biol Evol. 2019;36:2069–85. DOIPubMedGoogle Scholar

Mertens  E, Dugan  VG, Stockwell  TB, Lindsay  LL, Plancarte  M, Boyce  WM. Evaluation of phenotypic markers in full genome sequences of avian influenza isolates from California. Comp Immunol Microbiol Infect Dis. 2013;36:521–36. DOIPubMedGoogle Scholar

Suttie  A, Deng  Y-M, Greenhill  AR, Dussart  P, Horwood  PF, Karlsson  EA. Inventory of molecular markers affecting biological characteristics of avian influenza A viruses. Virus Genes. 2019;55:739–68. DOIPubMedGoogle Scholar

Janzen  GM, Inderski  BT, Chang  J, Arendsee  ZW, Janas-Martindale  A, Torchetti  MK, et al. Sources and sinks of influenza A virus genomic diversity in swine from 2009 to 2022 in the United States. J Virol. 2025;99:e0054125. DOIPubMedGoogle Scholar

Coggon  A, Lopes  S, Simon  G, Arendsee  Z, Chen  KF, Chiapponi  C, et al. Quantifying the zoonotic risk profile of European influenza A viruses in swine from 2010 to 2020 inclusive. J Virol. 2025;99:e0030625. DOIPubMedGoogle Scholar

Sun  H, Liu  H, Zhang  J, Qu  X, Pang  Z, Xu  F, et al. Genome-scale evolution and phylodynamics of swine influenza A viruses in China: a genomic epidemiology study. Lancet Microbe. 2025;6:101020. DOIPubMedGoogle Scholar

Zeller  MA, Ma  J, Wong  FY, Tum  S, Hidano  A, Holt  H, et al. The genomic landscape of swine influenza A viruses in Southeast Asia. Proc Natl Acad Sci U S A. 2023;120:e2301926120. DOIPubMedGoogle Scholar

Cheung  JTL, Lau  EH, Jin  Z, Zhu  H, Guan  Y, Peiris  M. Influenza A virus transmission in swine farms and during transport in the swine supply chain. Transbound Emerg Dis. 2022;69:e3101–10. DOIPubMedGoogle Scholar

Takemae  N, Harada  M, Nguyen  PT, Nguyen  T, Nguyen  TN, To  TL, et al. Influenza A viruses of swine (IAV-S) in Vietnam from 2010 to 2015: multiple introductions of A(H1N1)pdm09 viruses into the pig population and diversifying genetic constellations of enzootic IAV-S. J Virol. 2016;91:e01490–16.PubMedGoogle Scholar

Rajão  DS, Walia  RR, Campbell  B, Gauger  PC, Janas-Martindale  A, Killian  ML, et al. Reassortment between swine H3N2 and 2009 pandemic H1N1 in the United States resulted in influenza A viruses with diverse genetic constellations with variable virulence in pigs. J Virol. 2017;91:10–128. DOIPubMedGoogle Scholar

Nasamran  C, Janetanakit  T, Chiyawong  S, Boonyapisitsopa  S, Bunpapong  N, Prakairungnamthip  D, et al. Persistence of pdm2009-H1N1 internal genes of swine influenza in pigs, Thailand. Sci Rep. 2020;10:19847. DOIPubMedGoogle Scholar

Cao  Z, Zeng  W, Hao  X, Huang  J, Cai  M, Zhou  P, et al. Continuous evolution of influenza A viruses of swine from 2013 to 2015 in Guangdong, China. PLoS One. 2019;14:e0217607. DOIPubMedGoogle Scholar

Zhao  Y, Han  L, Sang  H, Yang  P, Hou  Y, Xiao  Y. Two genotypes of H3N2 swine influenza viruses identified in pigs from Shandong Province, China. Front Cell Infect Microbiol. 2024;14:1517023. DOIPubMedGoogle Scholar

Hu  M, Yuan  S, Zhang  K, Singh  K, Ma  Q, Zhou  J, et al. PB2 substitutions V598T/I increase the virulence of H7N9 influenza A virus in mammals. Virology (Auckl). 2017;501:92–101. DOIPubMedGoogle Scholar

Czudai-Matwich  V, Otte  A, Matrosovich  M, Gabriel  G, Klenk  HD. PB2 mutations D701N and S714R promote adaptation of an influenza H5N1 virus to a mammalian host. J Virol. 2014;88:8735–42. DOIPubMedGoogle Scholar

Swanson  NJ, Marinho  P, Dziedzic  A, Jedlicka  A, Liu  H, Fenstermacher  K, et al. 2019-2020 H1N1 clade A5a.1 viruses have better in vitro fitness compared with the co-circulating A5a.2 clade. Sci Rep. 2023;13:10223. DOIPubMedGoogle Scholar

World Health Organization. Influenza A(H1N1) variant virus—Viet Nam [cited 2026 May 27]. https://www.who.int/emergencies/disease-outbreak-news/item/2024-DON532

World Health Organization. Genetic and antigenic characteristics of zoonotic influenza A viruses and development of candidate vaccine viruses for pandemic preparedness [cited 2026 May 27]. https://cdn.who.int/media/docs/default-source/vcm-southern-hemisphere-recommendation-2025/202409_zoonotic_recommendations_final.pdf

 

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