[1. Bayliss C.D., Spies U., Shaw K., Peters R.W., Papageorgiou A., Müller H., Boursenell M.E.: A comparison of the sequences of segment A of four infectious bursal disease virus strain and identification of a variable region in VP2. J Gen Virol 1990, 71, 1303–1312.10.1099/0022-1317-71-6-1303]Search in Google Scholar
[2. Brandt M., Yao K., Liu M., Heckert R.A., Vakharia V.N.: Molecular determinants of virulence, cell tropism, and pathogenic phenotype of infectious bursal disease virus. J Virol 2001, 75, 11974–11982.10.1128/JVI.75.24.11974-11982.2001]Search in Google Scholar
[3. Coulibaly F., Chevalier C., Gutsche I., Pous J., Navaza J., Bressanelli S., Delmas B., Rey F.A.: The birnavirus crystal structure reveals structural relationships among icosahedral viruses. Cell 2005, 120, 761–772.10.1016/j.cell.2005.01.009]Search in Google Scholar
[4. Dobos P., Hill B.J., Hallett R., Kells D.T., Becht H., Teninges D.: Biophysical and biochemical characterization of five animal viruses with bisegmented double-stranded RNA genomes. J Virol 1979, 32, 593–605.10.1128/jvi.32.2.593-605.1979]Search in Google Scholar
[5. Domańska K., Mato T., Rivallan G., Śmietanka K., Minta Z., de Boisseson C., Toquin D., Lomniczi B., Palya V., Eterradossi N.: Antigenic and genetic diversity of early European isolates of infectious bursal disease virus prior to the emergence of the very virulent viruses: early European epidemiology of infectious bursal disease virus revisited? Arch Virol 2004, 149, 465–480.10.1007/s00705-003-0230-6]Search in Google Scholar
[6. Durairaj V., Sellers H.S., Linnemann E.G., Icard A.H., Mundt E.: Investigation of the antigenic evolution of field isolates using the revers genetic system of infectious bursal disease virus (IBDV). Arch Virol 2011, 156, 1717–1728.10.1007/s00705-011-1040-x]Search in Google Scholar
[7. Escaffre O., Le Nouën C., Amelot M., Ambroggio X., Ogden K.M., Guionie O., Toquin D., Müller H., Islam M.R., Eterradossi N.: Both genome segments contribute to the pathogenicity of very virulent infectious bursal disease virus. J Virol 2013, 87, 2767–2780.10.1128/JVI.02360-12]Search in Google Scholar
[8. Fernandes M.J.B., Simoni I.C., Vogel M.G., Harakava R., Rivas E.B., Oliveira M.B.C., Kanashiro A.M.I., Tessari E.N.C., Gama N.M.S.Q., Arns C.W.: Molecular characterization of Brazilian infectious bursal disease virus isolated from 1997 to 2005. Avian Dis 2009, 53, 449–454.10.1637/8531-112808-Reg.1]Search in Google Scholar
[9. Islam M.T., Le T.H., Rahman M.M., Islam M.A.: Molecular characterization of two Bangladeshi infectious bursal disease virus isolates using the hypervariable sequence of VP2 as a genetic marker. J Vet Sci 2012, 13, 405–412.10.4142/jvs.2012.13.4.405]Search in Google Scholar
[10. Jackwood D.J., Jackwood R.J., Sommer S.E.: Identification and comparison of point mutations associated in classic and variant infectious bursal disease viruses. Virus Res 1997, 49, 131–137.10.1016/S0168-1702(97)01465-2]Search in Google Scholar
[11. Jackwood D.J., Sommer-Wagner S.: Genetic characteristics of infectious bursal disease viruses from four continents. Virology 2007, 365, 369–375.10.1016/j.virol.2007.03.04617488648]Search in Google Scholar
[12. Jackwood D.J., Sreedevi B., LeFever L.J., Sommer-Wagner S.E.: Studies on naturally occurring infectious bursal disease viruses suggest that a single amino acid substitution at position 253 in VP2 increases pathogenicity. Virology 2008, 377, 110–116.10.1016/j.virol.2008.04.01818502466]Search in Google Scholar
[13. Le Nouën C., Rivallan G., Toquin D., Darlu P., Morin Y., Beven V., Boisseson C., Cazaban C., Comte S., Gardin Y., Eterradossi N.: Very virulent infectious bursal disease virus: reduced pathogenicity in a rare natural segment-B reasserted isolate. J Gen Virol 2006, 87, 209–216.10.1099/vir.0.81184-016361433]Search in Google Scholar
[14. Letzel T., Coulibaly F., Rey F.A. Delmas B., Jagt E., Van Loon A.A.M.W., Mundt E.: Molecular and structural bases for the antigenicity of VP2 of infectious bursal disease virus. J Virol 2007, 81, 12827–12835.10.1128/JVI.01501-07216912217881448]Search in Google Scholar
[15. Lim B.L., Cao Y., Yu T., Mo W.C.: Adaptation of very virulent infectious bursal disease virus to chicken embryonic fibroblasts by site-directed mutagenesis of residues 279 and 284 of viral coat protein VP2. J Virol 1999, 73, 2854–2862.10.1128/JVI.73.4.2854-2862.199910404310074133]Search in Google Scholar
[16. Lu Z., Zhang L., Wang N., Chen Y., Gao L., Wang Y., Gao H., Gao Y., Li K., Qi X., Wang X.: Naturally occurring reassortant infectious bursal disease virus in northern China. Virus Res 2015, 203, 92–95.10.1016/j.virusres.2015.04.00325869881]Search in Google Scholar
[17. Martin A.M., Fallacara F., Barbieri I., Tosi G., Rivallan G., Eterradossi N., Ceruti R., Cordioli P.: Genetic and antigenic characterization of infectious bursal disease virus isolated in Italy during the period 2002–2005. Avian Dis 2007, 51, 863–872.10.1637/7904-020107-REGR.118251395]Search in Google Scholar
[18. Metwally A.M., Yousif A.A., Shaheed I.B., Mohammed W.A., Samy A.M., Reda I.M.: Re-emergence of very virulent IBDV in Egypt. Int J Virol 2009, 5, 1–17.10.3923/ijv.2009.1.17]Search in Google Scholar
[19. Noor M., Mahmud M.S., Ghose P.R., Roy U., Nooruzzaman M., Chowdhury E.H., Das P.M., Islam M.R., Muller H.: Further evidence for the association of distinct amino acid residues with in vitro and in vivo growth of infectious bursal disease virus. Arch Virol 2014, 159, 701–709.10.1007/s00705-013-1885-224136723]Search in Google Scholar
[20. OIE (World Organisation for Animal Health). Infectious bursal disease (Gumboro disease). Chapter 2.3.12. In: Manual of Diagnostic Tests and Vaccines for Terrestrial Animals. Paris 2016, pp. 1–21.]Search in Google Scholar
[21. Van den Berg T.P.: Acute infectious bursal disease in poultry: A review. Avian Pathol 2000, 29, 175–194.10.1080/0307945005004543119184804]Search in Google Scholar