No new pandemic before 2028 carries an 82.5% market-implied probability because current global surveillance by the WHO and CDC shows no novel pathogen achieving sustained human-to-human transmission at epidemic scale. Ongoing localized outbreaks—including clade I mpox cases, H5N1 avian influenza in U.S. dairy herds, Oropouche virus in the Americas, and measles clusters—remain contained without meeting pandemic thresholds for widespread geographic spread or severity. Post-COVID improvements in genomic monitoring, rapid testing, and international reporting have reduced detection lags, while historical patterns indicate major events occur infrequently. Traders weigh these stable epidemiological indicators against the inherent uncertainty in viral evolution and zoonotic spillovers.