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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
[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
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
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