1. Institute of Diagnostic Virology Friedrich‐Loeffler‐Institute Greifswald‐Riems Germany
2. Department of Poultry Diseases, Faculty of Veterinary Medicine Beni‐Suef University Beni‐Suef Egypt
3. Institute of Immunology Virology Friedrich‐Loeffler‐Institute Greifswald‐Riems Germany
4. Department of Pathology, Faculty of Veterinary Science Bangladesh Agricultural University Mymensingh Bangladesh