Acknowledgments This work was funded by a PhD scholarship to Dr Mahgoub from the Egyptian Ministry of Higher Education, administered through the Cultural Centre and Educational Bureau, Embassy of the Arab Republic of Egypt, London and supported by the Biotechnology and Biological Sciences Research Council through an Institute Strategic Programme Grant to the IAH. We thank Professor Nicolas Eterradossi, AFFSA, France for the kind gift of the vvIBDV strain UK661. We also thank the staff of the Experimental Animal House, IAH, for their assistance with the challenge experiments.

This paper acknowledges the support of the Egyptian Ministry of Higher Education, the Biotechnology and Biological Sciences Research Council, and the Experimental Animal House staff for their assistance with challenge experiments.

Erratum to: An overview of infectious bursal disease

Key Takeaway: This paper acknowledges the support of the Egyptian Ministry of Higher Education, the Biotechnology and Biological Sciences Research Council, and the Experimental Animal House staff for their assistance with challenge experiments.