The rapid assessment tool (RAT) is meant to assess health facilities within mpox-affected areas that have at least one inpatient bed. Depending on time and resources available, certain facilities may be prioritized during an mpox outbreak. The RAT evaluates 16 infection prevention and control (IPC) and water, sanitation and hygiene (WASH) criteria identified as the minimum essential elements required for safe patient care and prevention of transmission within the health facility during readiness or response activities for outbreaks of mpox.