Infectious laryngotracheitis (ILT) is an acute contagious upper respiratory tract infection of chickens and other birds, caused by Gallid herpesvirus1 (GaHV-1), which has economic importance in the poultry industry. There was no scientific data about incidence disease broiler farms Sulaymaniyah province/Iraq. Therefore, this study aimed to investigate ILTV that region. Clinically inf...