Preventing vaccination failure in poultry flocks

Vaccines are used to prevent disease outbreaks when a flock is exposed to field disease organisms. From time to time, vaccination failure occurs when chickens do not develop adequate antibody titre levels or are susceptible to a field disease outbreak following vaccine administration. Poultry World sums up the factors necessary to avoid inadequate vaccine protection. When a vaccination fails, the quality of the vaccine is typically blamed. Although this is certainly an important consideration,