American tests positive for hantavirus: Here's what to know

Watch on YouTube ↗  |  May 11, 2026 at 16:52  |  6:04  |  CNBC

Summary

Dr. Vin Gupta discusses hantavirus after 17 American cruise passengers returned to the U.S., with one testing positive. He says the risk of a wider outbreak is low but emphasizes careful monitoring and the importance of vaccine platforms like mRNA for future pandemic preparedness.

  • 17 American passengers from a hantavirus-stricken cruise ship returned to U.S. soil, one tested positive, another showed mild symptoms.
  • Dr. Vin Gupta, MSNBC senior medical analyst, assesses concern level as low for a broader outbreak.
  • Hantavirus can cause hantavirus pulmonary syndrome with a high fatality rate, requiring ICU-level care.
  • Transmission may not require prolonged close contact, raising some concern based on early reports.
  • Nebraska's biocontainment center is one of the world's best for handling emerging pathogens.
  • Dr. Gupta supports continued investment in mRNA vaccine technology for rapid response to zoonotic diseases.
  • The attack rate on the cruise ship was much lower than early COVID, offering some relief.
  • Contact tracing and full quarantine for exposed individuals are recommended to prevent further spread.
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