What is a risk matrix and how is it used in ICRA?

• A. A device for measuring temperature.
• B. A form for incident reports.
• C. A tool combining probability of exposure with impact to categorize risk levels and prioritize mitigation.
• D. A chart for staffing rosters.

Answer: (C)

A risk matrix in ICRA is a practical tool that combines how likely an exposure is with how severe the potential impact would be, and then uses that combined assessment to categorize risk levels and guide what actions to take. In practice, teams rate the chance of an exposure occurring (low to high) and the consequence if it did happen (minor to catastrophic). The matrix then translates those two dimensions into a risk level (such as low, medium, high), which helps prioritize mitigation efforts.

This is useful because it focuses attention and resources on the situations that pose the greatest threat, prompting appropriate controls—engineering measures (like ventilation or isolation rooms), administrative changes (training, workflows, procedures), and personal protective equipment—before problems arise. It also provides a clear, communicable way to show why certain risks receive more urgent attention.

It's not used for measuring temperature, it's not a form for incident reports, and it's not a chart for staffing rosters. Those functions are separate from assessing and prioritizing infection risks.