molecular characterization of seven chinese isolates of infectious bursal disease virus: classical, very virulent, and variant infectious bursal disease virus (ibdv) strains isolated from china have been characterized in this study, including a classical strain cj801, an attenuated strain gz911, a variant strain gz902, and four very virulent strains g9201, g9302, f9502, and hk46. with the use of reverse transcription-polymerase chain reaction, the full-length vp2 genes were amplified and the hypervariable regions were sequenced. protein sequences of the hypervariable region (a.a. 143-382) of the field isolates con ...19989645325
genomic analysis of one chinese strain ys07 of infectious bursal disease virus reveals unique genetic diversity.the complete genome sequence of infectious bursal disease virus (ibdv) ys07 strain with low mortality isolated from guangdong province of china in 2007 was reported in this study. the genome sequences and deduced amino acid (aa) sequences of ys07 were compared with that of previously reported ibdv strains. phylogenetic analyses based on the deduced aa sequences of vp5, polyprotein, and vp1 protein revealed that ys07 bears its origin from european very virulent (vv) ibdv strains. multiple aa sequ ...200919533318
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