Which scenario represents risk factors for introducing avian viruses into a flock?

Which scenario represents risk factors for introducing avian viruses into a flock?

• A. Interaction with wild migratory waterfowl
• B. Reuse of contaminated live market cages
• C. Both A and B
• D. Neither

Answer: (B)

Exposure to wildlife sources and contaminated equipment are two main ways avian viruses can enter a flock. Wild migratory waterfowl are natural reservoirs for avian viruses such as influenza; they shed virus in feces, secretions, and water, so contact between their environment and your flock—directly or via shared water, feeders, or proximity to wetlands—can introduce infection. Reusing contaminated live market cages is a classic fomites risk; virus can persist on surfaces and be carried into a new flock when those cages are used again without proper cleaning and disinfection. Because both routes present clear risk, the scenario that represents introducing viruses into a flock encompasses both pathways. Implementing strong biosecurity—prevent wild-bird access, use dedicated equipment or thoroughly disinfect reusable gear between uses, and avoid transferring materials between farms—reduces these risks.

Exposure to wildlife sources and contaminated equipment are two main ways avian viruses can enter a flock. Wild migratory waterfowl are natural reservoirs for avian viruses such as influenza; they shed virus in feces, secretions, and water, so contact between their environment and your flock—directly or via shared water, feeders, or proximity to wetlands—can introduce infection. Reusing contaminated live market cages is a classic fomites risk; virus can persist on surfaces and be carried into a new flock when those cages are used again without proper cleaning and disinfection.

Because both routes present clear risk, the scenario that represents introducing viruses into a flock encompasses both pathways. Implementing strong biosecurity—prevent wild-bird access, use dedicated equipment or thoroughly disinfect reusable gear between uses, and avoid transferring materials between farms—reduces these risks.