Dr. Stephen Kornfeld, a 69-year-old retired oncologist from Oregon, has tested negative on confirmatory PCR testing and been moved out of the biocontainment unit at the University of Nebraska Medical Center and into one of the quarantine units. This is welcome news for him and his family. Kornfeld had been admitted after a "faintly positive" pre-return test result; blood work is still pending. What makes his case particularly notable is how he likely got sick in the first place: he spent time aboard the Hondius caring for ill passengers, and it was during that work that he developed a flu-like illness. Whether that illness was actually early hantavirus is something we may never know for certain.

The WHO's case count of 11 linked to the Hondius includes Kornfeld's, classified as "inconclusive," alongside 8 confirmed and 2 probable cases. He's currently in the quarantine unit with 15 other asymptomatic American passengers, with two more being monitored at Emory. The CDC is encouraging American passengers to remain in quarantine for the full 42-day monitoring window, and recommends testing only for those who develop symptoms.

Is this good news? Yes, with caveats. For Kornfeld and his family, clearly. But the broader picture hasn't changed much. Andes virus typically incubates in 2–4 weeks, with up to 6 weeks well-supported by data (hence the 42-day window). A handful of poorly documented reports suggest up to 8 weeks, but because those are outliers likely reflecting uncertainty around exposure or symptom timing, both the WHO and CDC are holding at 42 days right now. Passengers exposed on the ship could still develop illness in the weeks ahead, and while 16 asymptomatic people in Nebraska is reassuring, it isn't the end. The WHO has emphasized that their work is not done until each and every passenger on the ship (along with close contacts) is out of quarantine and reunited with their families.

Public risk remains low, and we will keep you updated if anything about the situation changes to suggest otherwise.