This document provides advice on the proper use of masks during an influenza outbreak. It recommends that masks fit tightly to cover the nose and mouth, minimizing gaps to effectively block respiratory droplets. Surgical N95 respirators or higher that are FDA-cleared are recommended for protection from viruses. The document stresses that masks should not be reused, as this increases disease transmission risk, and should be discarded immediately after use or if soiled. Frequent hand washing is also advised.