Genomic and antigenic properties of Newcastle Disease virus genotypes 2.XX1 and 2.VII from Egypt do not point to antigenic drift as a driving force of spread
(Running title: Absence of antigenic drift in Newcastle Disease virus)
Mahmoud M. Naguib1, 2, Dirk Höper3, Magdy F. Elkady4, Manal A. Afifi5, Ahmed Erfan2, Hassanein H. Abozeid5, Wafaa M. Hasan2, Abdel-Satar Arafa2, Momtaz Shahein2, Martin Beer3, Timm C. Harder3, Christian Grund3,#
1Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, 751 21 Uppsala, Sweden
2 National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture research centre, Giza 12618, Egypt
3 Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Diagnostic Virology, 17493 Greifswald Insel-Riems, Germany
4 Department of poultry disease, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
5 Department of Poultry disease, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt