Early challenge with LPAI-H9N2 followed by vNDV-VII.1.1 in vaccinated and unvaccinated broilers: a comprehensive

Ahmed Elbestawy1,2, Eman Khalifa3, Adel H Saad4

  • 1Department of Bird and Rabbit Diseases, Faculty of Veterinary Medicine, Menoufia University, Shebeen Elkom, Egypt.

Abstract

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