CDC Tracks Hantavirus Exposure Following Argentina Ship Outbreak

The U.S. Centers for Disease Control and Prevention (CDC) is monitoring 41 individuals who were exposed to hantavirus after the MV Hondius outbreak that began in Argentina. The monitored group includes repatriated passengers in Nebraska and Atlanta, travelers who left the ship before the outbreak was identified, and contacts who were exposed during transit. CDC officials, led by incident manager Dr. David Fitter, have chosen a risk‑based monitoring approach rather than mandatory quarantine, deeming the overall public risk low. Monitoring lasts up to 42 days with daily check‑ins by state health departments and rapid diagnostic testing if symptoms develop.

Separately, the U.S. State Department has eased its travel advisory for Argentina, stating that the risk of hantavirus infection for most visitors is "extremely low." The advisory change follows the MV Hondius incident that killed three passengers, including a Dutch couple, and infected a Swiss traveler who returned home. The World Health Organization was notified on 2 May, and the outbreak was declared over on 2 July. While the United States has lowered its warnings, Canada has not yet aligned its travel guidance.