27 Nov 2025 – 1 Apr 2026
According to an Argentine Health Ministry report, the eventual suspected index case (a Dutch passenger) took a four-month road trip through Chile, Uruguay, and Argentina before returning to Argentina four days before departure—information later used to guide rodent capture/testing and contact tracing along his route.
1 Apr 2026
MV Hondius departed from Ushuaia, Argentina, with passengers and crew aboard, beginning the voyage during which the outbreak would later be identified.