Trader consensus on Polymarket reflects an 88.5% implied probability for no new pandemic in 2026, driven by the absence of any pathogen achieving sustained human-to-human transmission at global scale, as monitored by WHO and CDC surveillance systems. Recent hantavirus cases linked to a cruise ship arrival from Argentina in early May prompted brief concerns, but official assessments confirm its primary rodent-borne transmission via contaminated aerosols, with extremely low public health risk and no evidence of efficient person-to-person spread—explicitly not comparable to COVID-19 per WHO epidemiologists. Ongoing mpox clade Ib outbreaks remain regionally contained with over 180,000 global cases since 2022 but below pandemic thresholds, while H5N1 avian influenza persists in animal reservoirs without human pandemic adaptation. Strengthened post-2025 WHO Pandemic Agreement enables rapid detection, supporting traders' confidence amid inherent epidemiological uncertainties; key upcoming WHO Hub updates and model forecasts could shift sentiment if novel zoonotic spillover accelerates.