a set of preventive measures designed to reduce the risk of transmission of infectious diseases in crops and livestock, quarantined pests, invasive alien species, and living modified-organisms.

Overview

Biosecurity is a growing concept that is sometimes used to include concerns about bioterrorism.

Biosecurity has multiple meanings and is defined differently according to various disciplines. The original definition of biosecurity started out as a set of preventive measures designed to reduce the risk of transmission of infectious diseases in crops and livestock, quarantined pests, invasive alien species, and living modified organisms. The term was first used by the agricultural and environmental communities. [...] The most inclusive definition of all would be biosecurity as "security against the inadvertent, inappropriate, or intentional malicious or malevolent use of potentially dangerous biological agents or biotechnology, including the development, production, stockpiling, or use of biological weapons as well as outbreaks of newly emergent and epidemic disease" as defined by The National Academies of Science (Koblentz, 2010). {See Wiki's Article on "Biosecurity", accessed 5-Jun-14}

Sustainable living context

Within the context of sustainable living, biosecurity can be thought of as:

any combination of systems and practices put into place to prevent the spread of biological agents, pathogens, or toxins in natural and managed environments.

For the homestead, it can mean prevention of fertilizer or agricultural waste contamination of drinking water. For pets and livestock, we can refer to concerns and associated risk-management around viruses, fungi, bacteria, and disease prevention especially if it can be passed to people.