Using isolator caging to prevent microorganisms from reaching the animals housed inside is best described as which term?

Using isolator caging to prevent microorganisms from reaching the animals housed inside is best described as which term?

• A. Prevention
• B. Containment
• C. Inclusion
• D. Exclusion

Answer: (D)

Exclusion is the act of preventing external contaminants from entering a protected space. An isolator caging system creates a physical barrier around the animals and often uses controlled airflow to keep microorganisms outside. The goal is to stop external pathogens from reaching the animals, which makes exclusion the best description. Prevention is a broader idea about avoiding problems in general, containment focuses on keeping something inside a boundary (not specifically preventing entry), and inclusion would mean bringing contaminants into the space, which isn’t the aim here.

Exclusion is the act of preventing external contaminants from entering a protected space. An isolator caging system creates a physical barrier around the animals and often uses controlled airflow to keep microorganisms outside. The goal is to stop external pathogens from reaching the animals, which makes exclusion the best description. Prevention is a broader idea about avoiding problems in general, containment focuses on keeping something inside a boundary (not specifically preventing entry), and inclusion would mean bringing contaminants into the space, which isn’t the aim here.