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PAHO
WHO's Americas regional office; issued the December 2025 hantavirus alert before the MV Hondius cluster.
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#11 May
Mentioned in: Emory aerosol study reframes dairy PPE
Pandemics and Biosecurity#11 May
Logged 75 cumulative H5N1 human cases in the Americas since 2022, with no new cases since 24 November 2025
Pandemics and Biosecurity: Idaho dairy H5N1 breaks five-month US lull#122 Apr
Expanded CEPI partnership on 14 April for regulatory and vaccine-safety capacity in the Americas
Pandemics and Biosecurity: Moderna begins Phase 3 H5N1 mRNA trial#119 Dec