molecular epidemiology of infectious bursal disease viruses isolated from southern china during the years 2000-2010.we performed a molecular epidemiology study of infectious bursal disease virus (ibdv) from six provinces in southern china by analyzing ibdvs isolated during the years 2000-2010. sequence analysis of hypervariable regions of the vp2 gene (vvp2) in the genome of these isolates revealed that the majority of these viruses (45/59) were characterized as vv (very virulent) ibdv genotype, 12 out of 59 isolates were avirulent ibdv genotype and two from guangxi were intermediate ibdv genotype. phylogenet ...201222639104
complete genome sequence analysis of a natural reassortant infectious bursal disease virus in china.a novel isolate of infectious bursal disease virus (ibdv) was designated gx-nn-l. the gx-nn-l ibdv was a very virulent infectious bursal disease virus (vvibdv) isolated from broiler flocks in guangxi province, china, in 2011. the gx-nn-l ibdv caused high mortality, immunosuppression, low weight gain, and bursal atrophy in commercial broilers. here, we report the complete genome sequence of the gx-nn-l ibdv, a reassortment strain with segments a and b derived from very virulent strains and attenu ...201223043174
[molecular epidemiology of infectious bursal disease virus in guangxi during the period of 2000 to 2007].tissue samples of fabricius' bursa collected from nanning, yulin, beihai and wuzhou in the provinces of guangxi in china during the years of 2000-2007, were detected by a established reverse transcriptase polymerase chain reaction (rt-pcr) technique for ibdv. viral isolation was performed on the positive samples by chicken embryo inoculation via chorio-allantoic membrane (cam). results showed that 27 isolates of ibdv were obtained. a set of primers were designed to amplify the vvp2 of 27 isolate ...200920077934
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