Which practice best reduces the risk of disease spread during a suspected outbreak?

• A. Move birds off premises
• B. Restrict movement and isolate affected birds
• C. Increase flock density
• D. Do nothing

Answer: (C)

Preventing further spread during a suspected outbreak comes down to breaking transmission pathways. The best practice is to restrict movement and isolate affected birds. By limiting where birds, people, equipment, and vehicles can go, you reduce the number of contacts between potentially infectious birds and the rest of the flock or other premises. This containment slows or stops transmission, giving responders time to identify cases, trace contacts, disinfect surfaces, and implement further controls.

Moving birds off the premises can relocate the problem and introduce infection to new sites, making tracing and containment much harder. Increasing flock density raises contact rates and accelerates spread, worsening the outbreak. Doing nothing allows the disease to spread unchecked. Restricting movement and isolating the affected birds directly reduces exposure and is the cornerstone of early outbreak containment.