Prevalence, Serodiagnosis and Histopathological Changes in Field Cases of Infectious Bronchitis in Chickens

Diagnostic Studies of Infectious Bronchitis Disease in Broilers using Pathological and Molecular Investigations in Kaliobeya Governorate, Egypt

“…Hemorrhage and congestion with heterophils` and lymphocytes` infiltrations were detected in the air sac, liver, lungs, heart, muscle, ovary and brain. Our findings were partially agreed with those published by Gola and co-authors [12] who described the lesion of air sac edema, epithelial desquamation and fibrinous exudate. Infectious bronchitis virus spread in the Middle East between the countries through crossborder movements of poultry and poultry-related products [20].…”

“…Cellular and hyaline cast inside the lumen of some renal tubules were detected. Similar microscopic examination of Kidneys was also reported in another study [12]. Hemorrhage and congestion with heterophils` and lymphocytes` infiltrations were detected in the air sac, liver, lungs, heart, muscle, ovary and brain.…”

“…The air sac revealed edema, epithelial desquamation and fibrinous exudate. The liver showed congestion, degeneration and necrosis of hepatic cells with distortion of hepatic cords and infiltration of inflammatory cells [12].Vaccination is commonly adopted but outbreaks continue to occur worldwide due to new variants strains continue to emerge [13]. There is little or no cross-protection between different serotypes of IBVs leading to immune failures and making the disease difficult to control [14] MATERIALS AND METHODS…”