What is the recommended response to a suspected pathogen introduction in a mouse facility?

• A. Quarantine affected groups immediately, notify veterinary staff, enhance biosecurity, and review SOPs.
• B. Quarantine only after a confirmed positive test and then wait 72 hours.
• C. Notify authorities and shut down the facility permanently.
• D. Ignore the event unless there are visible symptoms.

Answer: (B)

Immediate containment and escalation are essential when a suspected pathogen is introduced into a mouse facility. The recommended response is to quarantine the affected groups right away, notify the veterinary staff, bolster biosecurity measures, and review and reinforce standard operating procedures. Taking these actions promptly helps stop potential spread before it becomes widespread, protects animal welfare, and maintains the integrity of the research colony. Waiting for a confirmed positive test before quarantining can allow a pathogen to disseminate, making containment much harder and increasing risk to other groups. Ignoring the event or relying on visible symptoms alone isn’t appropriate, and actions taken without prompt assessment can miss subclinical infections.