Presence of Infectious Bronchitis Virus Strain CK/CH/LDL/97I in the Middle East

Table 2

IBV isolates with their tissue tropism (according to the presence of IBV by diagnostic N gene RT-PCR) and clinical history.

Isolate	Tropism	Clinical findings	Vaccine used	Chicken/age
JOA4	Trachea, ovary	Drop in egg production	H120
		Watery cysts in ovaries	M41	Layer, 24 weeks
		Short and enlarged oviducts	4/91
JOA2	Trachea, kidney, ovary	Drop in egg production	H120, M41, 4/91	Layer, 22 weeks
Saudi-1	Trachea	Respiratory signs	H120, 4/91	Broiler, 22 days
Saudi-2	Trachea	Respiratory signs	H120, 4/91	Broiler, 24 days
Iraqi IBV	Trachea, kidney	Respiratory signs, nephritis, and drop in egg production	H120, M41, 4/91	Breeder, 25 weeks