Recent hantavirus outbreaks linked to the MV Hondius cruise ship, including confirmed Andes virus cases and three deaths among passengers, have activated CDC emergency monitoring and elevated trader expectations that a Level 3 Travel Health Notice will be issued by year-end. This development, combined with surging U.S. measles cases prompting a May travel advisory and continued H5N1 avian influenza surveillance with documented human infections, reflects sustained epidemiological pressures that historically trigger multiple Level 3 notices annually for diseases such as meningococcal infection or yellow fever. Official CDC data show low general-public transmission risk for hantavirus, yet global passenger dispersal and weekly surveillance reports could accelerate notice criteria if case clusters expand. Market-implied odds at 75.5% for "Yes" capture this ongoing disease activity while acknowledging forecast uncertainties around new case thresholds and geographic spread.