New IBV Variant Designated DMV/1639 | View Abstract
Brian Jordan 

Avian infectious bronchitis virus (IBV) causes an economically significant upper respiratory tract disease in chickens. Like most RNA viruses, IBV is genetically diverse due to a high mutation rate and then selection of these variants through host fitness and immune pressure. New IBV variants are continuously emerging, which complicates vaccination-based infectious bronchitis (IB) control. The most recent variant of IBV, DMV/1639, was originally isolated and characterized on the Delaware, Maryland, Virginia (DelMarVa) peninsula in 2011, but did not cause significant economic losses in the broiler industry until the winter of 2014/2015.

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