Current CDC travel health notices show no active Level 4 designations as of late May 2026, reflecting the absence of extreme global health risks that would justify “Avoid All Travel” advisories under agency criteria. Ongoing Ebola outbreaks in East and Central Africa have prompted targeted entry screening and 30-day restrictions rather than broad Level 4 notices, while dengue and polio alerts remain at Levels 1–2. With no confirmed surges meeting the extreme-risk threshold and routine surveillance indicating contained transmission, traders assign a 76.5% implied probability against issuance by December 31, consistent with historical patterns where Level 4 warnings have been reserved for exceptional, rapidly escalating threats.