What challenging state allows recovered birds to shed *A. paragallinarum* for months?
Answer
Chronic carriers
A major hurdle in eradicating Infectious Coryza is the potential for birds that have seemingly recovered from the acute phase to become chronic carriers. In this persistent state, the *A. paragallinarum* bacteria remains latent or persists in the respiratory tissues long after clinical signs like discharge or swelling have vanished. These carriers intermittently or continuously shed low levels of the pathogen over extended periods, sometimes months. This hidden shedding maintains a constant reservoir of infection on the farm, posing a continuous risk to the rest of the flock and potentially to newly introduced, susceptible birds.
Related Questions
What is the primary bacterium responsible for true Infectious Coryza in poultry?What distinct audible sounds are key indicators of respiratory involvement in Coryza?What term describes inanimate objects like contaminated waterers that carry the Coryza agent?How does poor ventilation increase the severity of *A. paragallinarum* infection?What challenging state allows recovered birds to shed *A. paragallinarum* for months?What is the recommended quarantine period for new birds to protect an established flock from IC?Which agents can initiate infection or worsen Coryza after *A. paragallinarum* compromises defenses?When does the shedding of Coryza bacteria typically cease relative to visible recovery?What specific cleaning instruction prevents mechanical transfer of pathogens between pens?What aspect of *A. paragallinarum* infection is *not* resolved by treating secondary bacterial infections with prescribed antibiotics?