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Letter | Open Access

Genetic diversity and recombination analysis of NADC34-like porcine reproductive and respiratory syndrome viruses

Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
International Livestock Research Institute, Hanoi 112000, Vietnam
College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
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Highlights

• Recombinant variants represent a substantial proportion (56.82%) of the analyzed NADC34-like PRRSV strains.

• Twelve consistent recombinant patterns (R1–R12) were defined across 176 NADC34-like whole-genome sequences.

• Recombination hotspots in Chinese strains shifted from structural genes to ORF1a after 2020.

• Lineage 1.8 is the primary minor parent driving NADC34-like genetic diversification.

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Journal of Integrative Agriculture (JIA)
Volume 25 Issue 8,
August 2026
Pages 3503-3507
DOI: 10.1016/j.jia.2026.01.006

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Cite this article:
Ye Z, Wang W, Zhu Z, et al. Genetic diversity and recombination analysis of NADC34-like porcine reproductive and respiratory syndrome viruses. Journal of Integrative Agriculture (JIA), 2026, 25(8): 3503-3507. https://doi.org/10.1016/j.jia.2026.01.006

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Received: 23 August 2025
Revised: 04 December 2025
Accepted: 23 December 2025
Published: 07 January 2026
© 2026 CAAS.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer review under responsibility of Editorial Board of Journal of Integrative Agriculture.