Strand 5 Biosecurity: Protecting Farms, Food, and Facilities from Contamination and Disease

Biosecurity

Set of practices that prevents harmful agents from entering, spreading within, or leaving a site, such as a farm or processing facility.

Agent of contamination

Anything that can make a food product unsafe, unfit, or lower quality, including biological, chemical, and physical agents.

Biological agents

Living organisms like bacteria, viruses, and parasites that can cause disease in food.

Chemical agents

Substances such as pesticide residues, heavy metals, and allergens that can contaminate food products.

Physical hazards

Foreign materials like glass or metal fragments that can cause injury or contamination in food.

Source of contamination

The origin where an agent lives or is introduced, such as soil, manure, or contaminated water.

Route of contamination

The pathway through which an agent reaches the food product, such as handling, tools, or aerosols.

Primary production

The stage in agriculture where unprocessed foods like fresh produce and raw milk are produced.

Environmental sources

Factors from the natural environment that can lead to contamination, such as water and soil conditions.

Processing contamination risk

Increased risk of contamination during food processing, especially after kill steps where products are more exposed.

High-exposure steps

Stages in food production where the product is open, wet, or frequently touched, increasing contamination risk.

Cleaning vs disinfection

Cleaning removes organic material to allow disinfectants to work effectively; disinfection kills remaining microorganisms.

Chain of infection

A model describing the links necessary for a disease to spread: agent, reservoir, exit route, transmission, entry route, and susceptible host.

Tampering points

Steps in a process where someone could intentionally introduce a harmful agent, risking consumer safety.

Fomite

An object that can transfer an infectious agent, such as clothing, tools, or vehicles.

Relevant PPE

Personal protective equipment such as gloves, coveralls, and masks designed to reduce contamination risk.

Cross-site contamination

The transfer of biological agents from one site to another via people, vehicles, or equipment.

Hygiene barriers

Practices like handwashing and clothing changes that interrupt transmission routes between dirty and clean areas.

Biosecurity assessment

A structured evaluation of threats, vulnerabilities, and existing controls to determine residual risk in a facility.

Risk matrix

A tool used to classify risks based on likelihood and consequence to prioritize improvements.

Quarantine

Separation of individuals or materials to prevent the spread of disease, allowing monitoring for symptoms.

Vector control

Measures taken to minimize or eliminate organisms that can carry pathogens, such as rodents and insects.

Doffing area

A designated space where personnel remove PPE to prevent contamination before entering a new zone.

Cleaning chemicals risk

Potential contamination from improperly stored or misused cleaning agents that may reach food products.

Dedicated tools

Equipment assigned to specific areas (clean vs dirty) to minimize cross-contamination risks.

Contact time

The duration a disinfectant must remain on a surface to effectively kill microorganisms.

Cargo area contamination

The risk of contamination in the storage space of vehicles transporting food products.

Surveillance and monitoring

Ongoing observation and testing to identify potential contamination sources and ensure compliance with biosecurity measures.