Current CDC surveillance data indicate no active Level 4 Travel Health Notices, as all ongoing alerts remain at Level 1–3 for pathogens including Ebola in the Democratic Republic of the Congo, global dengue, polio, and measles. This positioning reflects the absence of any extreme-risk scenario—defined by the agency as situations offering no available precautions—supported by stable transmission rates and case thresholds reported through official monitoring. Recent low-level activations, such as the response to a May 2026 hantavirus cluster, have not escalated to the highest advisory tier. Routine updates from CDC and WHO tracking continue without signals of rapid deterioration, though new model runs or confirmed surges could alter assessments before year-end.