@article {M.:6 April 2004:0236-6290:163,
	author = "M. R. Seyfi Abad Shapouri",
	author = "M. Mayahi",
	author = "K. Assasi",
	author = "S. Charkhkar",
	title = "A survey of the prevalence of infectious bronchitis virus type 4/91 in Iran",
	journal = "Acta Veterinaria Hungarica",
	volume = "52",
	year = "6 April 2004",
	abstract = "To evaluate the prevalence of infectious bronchitis virus (IBV) type 4/91 in Iran, tracheal swabs from 77 broiler flocks in 16 provinces were collected at the slaughterhouse. Swabs were subjected to RNA extraction and tested by RT-PCR, followed by a type-specific nested PCR. The viral RNA was detected in 33 samples (42.8%) from different provinces. The results indicate a relatively high prevalence of IBV type 4/91 in Iran and necessitate revising the vaccination programme against this disease.",
	pages = "163-166(4)",
	url = "http://www.ingentaconnect.com/content/akiado/avh/2004/00000052/00000002/art00004"
}