Il Jang is a Veterinary Researcher in the Avian Disease Division of the Animal and Plant Quarantine Agency (APQA), Republic of Korea, with over 10 years of experience in veterinary research. He received his Ph.D. in Veterinary Medicine from Chonnam National University in 2022. His research focuses on avian viral diseases, molecular diagnostics, genomic surveillance, and the genetic characterization of veterinary vaccine strains. He applies next-generation sequencing and bioinformatics to whole-genome assembly, comparative genomics, and phylogenetic analysis. His work includes research on infectious bursal disease virus, infectious bronchitis virus, infectious laryngotracheitis virus, and avian metapneumovirus. His recent publications include a study using hybrid whole-genome sequencing to assess the genetic stability of infectious laryngotracheitis virus vaccine strains. His current research also explores viral detection and genomic characterization in companion birds. He aims to improve the diagnosis, surveillance, and control of avian infectious diseases through molecular and genomic approaches.