Timeline
H5N1
Highly pathogenic avian influenza subtype; infecting US dairy cattle since 2024, now resurging in Idaho in May 2026.
5 of 5 entries (5 events, 0 interactions)
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#11 May
Detected in submicron aerosol particles, wastewater, and pre-symptomatic milk tanks at 14 California farms
Pandemics and Biosecurity: Emory aerosol study reframes dairy PPE#11 May
Detected in Idaho dairy herds, ending a five-month absence of US dairy cattle detections
Pandemics and Biosecurity: Idaho dairy H5N1 breaks five-month US lull#122 Apr
Mentioned in: Moderna begins Phase 3 H5N1 mRNA trial
Pandemics and Biosecurity#131 Mar
Mentioned in: WHO publishes three Q1 pathogen-family roadmaps
Pandemics and Biosecurity#11 Feb