For unvaccinated flocks, the presence of IBV field challenge can simply be demonstrated by detecting positive IBV serology. However, for IBV vaccinated flocks, identification of a field challenge is ...

IBV is a highly contagious respiratory disease whereby transmission via surface contamination of the egg with faeces is possible. IBV can replicate in tissues of the respiratory and intestinal tracts, ...

When the disease is complicated by secondary bacterial infections, it can result in airsaculitis. Layers and breeder birds in lay can experience a drop in production; wrinkled and misshapen eggs are ...