No CDC Level 4 Travel Health Notice has been issued for any destination or disease as of late May 2026, supporting the 76.5% market-implied probability of “No” by year-end. Official CDC surveillance shows the recent hantavirus outbreak classified only at the lowest emergency activation level, while the Ebola situation in the Democratic Republic of the Congo prompted a Level 3 notice and enhanced U.S. entry screening rather than “Avoid All Travel.” Public-health agencies report moderate transmission patterns for influenza, mpox, and other monitored pathogens without exponential growth or novel high-fatality strains meeting Level 4 criteria of extreme risk with no effective precautions. Routine situational reports through May indicate continued baseline monitoring rather than escalation signals, though new data releases or outbreak developments could alter this assessment before December 31.