⚠Situational awareness tool — not an operational trigger. Any mobilization requires direct WHO verification and validation through your institutional protocol.

HIGH RISK

Avian Influenza

📍 United States

All Avian Influenza outbreaks →

Confirmed cases

Deaths

Case fatality rate

0.0%

Cumulative cases since outbreak start — USDA APHIS bulletin dated 2025-03-26

Report date : 2025-03-26

Official report date — in isolated zones, field onset typically precedes this by days to weeks.

Region : americas

USDA APHIS — H5N1 HPAI confirmed in 11 Dairy Milking Cows herds in Nevada. Latest detection: 2025-03-26. Source: https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/hpai-confirmed-cases-livestock

Focal Point GuidanceSTANDARD MONITORING

First actions

→Log in national surveillance system — continue routine monitoring
→Compare with seasonal baseline for this region and disease
→Include in weekly surveillance briefing — escalate if trend worsens (▲ cases or CFR)

Source: USDA APHIS↗

🔄Last checked by HealthWatch : 3h ago

🖨️PDF Report

Cite this page (Vancouver)

HealthWatch Global. Avian Influenza outbreak — United States [Internet]. 2025-03-26 [cited 2026 Jul 11]. Available from: https://healthwatch-global.com/en/outbreak/4ed4822f-6d06-4517-ab12-f32795354bdf. Data source: USDA APHIS.

Report a data error on this outbreak →

Get daily Avian Influenza alerts

14-day Pro trial — no credit card required

Or create a free account