Final answer:
When contaminated, a first responder should immediately follow local procedures for emergency decontamination, wear protective gear, and cleanse exposed skin with specified solutions.
Step-by-step explanation:
If a first responder becomes contaminated before realizing the situation, they should immediately withdraw and follow local procedures for emergency decontamination. This may include setting up a decontamination zone, but immediate self-decontamination is critical to prevent further spread of the contaminant and ensure the safety of the responder and others. Personnel should don protective clothing such as a protective coat, face protection, and cut-resistant gloves when managing potentially contaminated materials or patients. Immediate washing with detergent and warm water must be followed by further cleansing with a solution such as 1 N NaOH or a dilution of bleach. All contaminated waste should be handled properly, for example by incineration or autoclaving, following established safety protocols.