ArticleVeterinary research2025
A serologic marker attenuated live vaccine protects piglets against highly pathogenic porcine reproductive and respiratory syndrome virus infection.
Article in Veterinary research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
Currently, there are no commercial serologic marker or differentiation of infected and vaccinated animal (DIVA) vaccines for the eradication of porcine reproductive and respiratory syndrome virus (PRRSV) infection from pig farms. In a previous study, a nanobody-based competitive ELISA (cELISA) was specifically developed to detect anti-genotype 2 PRRSV (PRRSV-2) antibodies. On the basis of the epitope recognized by the nanobody and the prevalence of PRRSV-2 infection in China, a DIVA vaccine candidate strain was designed and evaluated in the present study. First, an infectious cDNA clone based on the genomic sequence of the highly pathogenic PRRSV-2 (HP-PRRSV) isolate SX-HD was constructed and named rSX-HD. Using the infectious clone as the backbone, a chimeric infectious cDNA clone in which the gene encoding the nucleocapsid (N) protein was replaced with the gene encoding the genotype 1 PRRSV N protein was generated and named rSX-HD
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