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Newcastle disease virus (NDV) has only a single serotype but diversified genotypes. Genotype VII strains are the prevalent currently circulating genotype worldwide, and in particular, these strains cause outbreaks in waterfowl. In this study, a reverse genetics system for highly virulent NDV isolated from goose flocks was developed independent of conventional T7 RNA polymerase. Infectious virus was...
Background The virulent Newcastle disease virus (NDV) strain NA-1 (genotype VII) was isolated from an epizootic involving a flock of geese in Jilin Province, Northeast China, in 1999. Compared with the classical NDV strains, which have a genome size of 15,186 bp, the more recently isolated NDV strains, including that involved in the goose outbreak, have an extra six nucleotides in the 5′-untranslated...
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