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Epidemiology, Genetic Evolution, and Capsid Protein Variation of Porcine Circovirus 2 in China (2023-2024): Sustained Dominance of Genotype PCV2d.

Viruses - 15 Apr 2026

Tong Ze, Ni Shiting, Liu Jiaqi, Liu Pingxuan, Shi Daisheng, Chen Guosheng, Zong Xin, Lv Yaning, Xiao Renhang, Tan Chen

Abstract excerpt

Porcine circovirus type 2 (PCV2) is a pathogen of major importance in swine that is characterized by ongoing genetic evolution. To provide an updated epidemiological assessment for China, our study analyzed 1051 clinical samples collected from 27 provincial-level regions between 2023 and 2024. The overall PCV2 positivity rate was 65.18%, with detection rates showing significant seasonal variation, with higher...

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PMID: 42043257
DOI: 10.3390/v18040468
PMCID: PMC13119977

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