A hantavirus outbreak has occurred, with some cases reportedly linked to a cruise ship. Response efforts are underway, with various units and facilities, including a biocontainment unit at Johns Hopkins Hospital and a special response unit in Carolina, preparing to or already supporting the response. The extent and impact of the outbreak, as well as the effectiveness of the response, are not entirely clear, with some reports suggesting that quarantine measures have ended for some individuals, while others raise concerns about us preparedness.