1. Department of Microbiology and Parasitology College of Veterinary Medicine King Faisal University Alhufuf Saudi Arabia
2. Department of Virology Faculty of Veterinary Medicine Kafrelsheikh University Kafr el‐Sheikh Egypt
3. School of Public Health, The University of Hong Kong Hong Kong China
4. Department of Clinical Studies College of Veterinary Medicine King Faisal University Alhufuf Saudi Arabia