Abstract
Getah virus (GETV) is an emerging zoonotic virus that can infect humans and many mammals through mosquitoes. In this study, a novel pathogenic GETV strain, GDQY2022, was isolated from a pig farm in Guangdong Province, China. Sequence comparisons and phylogenetic analysis showed that GDQY2022 belongs to group III (GIII) and was most closely related to strain HeN202009-2, with 99.78% nucleotide sequence identity. Histopathological examination revealed significant pathological changes, such as widened alveolar septum in the lungs with mild congestion and hemorrhage. Differences in viral load between tissues were assessed by real-time RT-PCR, and significantly higher levels of GETV were found in abdominal lymph nodes and lungs of subclinically and clinically affected pigs (P < 0.01). This study provides valuable data for understanding the risk of GETV infection in the pig industry and a reliable basis for studying the pathogenic mechanisms and diagnostic surveillance of GETV.
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This work was supported by grants from the Guangdong Provincial Natural Science Fund (2017A030310612).
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LZH designed and monitored the project. LZH, JHP, and HQZ wrote and revised the paper, performed all analyses, and interpreted the data. JHP, HQZ, GJY, SNC, XQC, MYZ, HH, YZG, JML, SCL, MJL, and MLM performed the experiments. LZH, JHP, and HQZ collected the samples. All authors revised and approved the paper for publication.
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GZY, SNC, MLM, and MJL were employed by Guangdong Findergene Biotechnology Co., Ltd., Foshan, Guangdong Province, China. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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The archived porcine samples analyzed in this study were collected from clinically diseased pigs, and animal experiments were not conducted. Thus, no ethical approval was required.
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Pan, J., Zhang, H., Chen, X. et al. Evolutionary characterization and pathogenicity of Getah virus from pigs in Guangdong Province of China. Arch Virol 168, 258 (2023). https://doi.org/10.1007/s00705-023-05886-4
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DOI: https://doi.org/10.1007/s00705-023-05886-4