Utah State University Extension
Biosecurity is taking measures to protect animals and humans from harmful biological agents. In commercial poultry production, this generally means total confinement operations with strict rules to maintain flock health such as shower-in and out systems, special clothing, and other measures. In small production or “backyard” poultry operations these measures aren’t always a reality. However, there are steps that should be taken to help promote biosecurity and safety for backyard flocks, and these are discussed in this fact sheet..
Dallin, Joshua and Perkins, Denton, "Backyard Poultry Biosecurity" (2017). All Current Publications. Paper 1742.