Official surveillance from the CDC and WHO shows no evidence of a qualifying hantavirus outbreak building in the United States or globally as of mid-June 2026. The May Andes virus cluster linked to the cruise ship remains limited to roughly a dozen confirmed or probable cases with no confirmed secondary spread in the U.S., where risk is assessed as extremely low; endemic Sin Nombre virus cases continue at typical low sporadic levels without clusters. Andes virus is the only strain known for efficient person-to-person transmission, yet it requires prolonged close contact and has not expanded beyond initial exposures. With the 21-day incubation window closing for monitored contacts and no new rodent-driven spillovers reported, trader consensus reflects the absence of conditions for rapid case growth before June 30. A late surge in unreported rodent exposures or an unexpected imported cluster could still shift the outcome, though current epidemiological indicators make this improbable.