ArticleTransboundary and emerging diseases2024
Potential Pathogenicity and Genetic Characteristics of a Live-Attenuated Classical Swine Fever Virus Vaccine Derivative Variant.
Article in Transboundary and emerging diseases, 2024. 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors.
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Abstract
Classical swine fever (CSF), caused by CSF virus (CSFV), is a highly contagious disease affecting pigs and causing massive pig production losses with severe global economic recession. The immunization of live-attenuated vaccines is still one of the key measures to CSFV management in endemic countries. However, there are also strong controversies about the usage of live-attenuated vaccines, particularly in pregnant sows and young pigs, such as in Europe, where domestic pigs are routinely not vaccinated until severe outbreaks occur. Here, we report a CSF outbreak in a pig farm in China, which affected more than 90% of the delivery sows and led to ∼45% birth loss. Surprisingly, phylogenetic analysis showed that the CSFV isolate (named CSFV/HeNLY2022, GenBank No. OR195698) was clustered into subgenotype 1.1a, closely together with the live-attenuated vaccine strains. Further genomic analysis also revealed that the isolate CSFV/HeNLY2022 shared the highest nucleotide identity of 99.7% with the C/HVRI vaccine strain (C-strain, GenBank No. AY805221). Moreover, compared to the C/HVRI strain, a total of eight amino acid mutations, distributed in E
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