Infectiousbronchitis virus continues to cause losses for broiler and layer operationsaround the globe in spite of extensive vaccination and diagnostic efforts. Dr. Richard Currie, veterinarian, molecularbiologist, and cofounder of x-OvO, said that there are three types ofdiagnostic test for determining the infectious bronchitis status of a flock ofchickens. He told the audiences of the WATTAgnet.com webinar, InfectiousBronchitis – Using PCR analysis to identify the predominant strain, sponsoredby MSD Animal Health, that three diagnostic methods, ELISA, Hemagglutinationinhibition, and molecular diagnostics (PCR), all have distinct advantages and disadvantages.