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HPAI tracker

HPAI egg-layer tracker

Commercial egg-layer flocks affected by highly pathogenic avian influenza, by detection date, from APHIS

Data through Jul 6, 2026 · page updated Jul 9, 2026

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16.1M layer birds have been affected by HPAI so far in 2026, across 15 detection days. Most recent: Jul 6, 2026.

The numbers
Detection dateState / countyLayer birdsControl area
Jul 6, 2026Utah / Cache1.2MActive
Mar 17, 2026Pennsylvania / Lancaster900,000Released
Mar 10, 2026Wisconsin / Walworth1.5MReleased
Mar 6, 2026Pennsylvania / Lancaster200,000Released
Feb 27, 2026North Carolina / Hyde3.3MReleased
Feb 27, 2026Wisconsin / Jefferson1.2MReleased
Feb 18, 2026Pennsylvania / Lancaster1.5MReleased
Feb 17, 2026Pennsylvania / Lancaster2.6MReleased
Feb 17, 2026Pennsylvania / Dauphin100,000Released
Feb 11, 2026Pennsylvania / Lancaster100,000Released
Feb 3, 2026Pennsylvania / Lancaster700,000Released

About HPAI egg-layer tracker

Highly pathogenic avian influenza (HPAI) is the supply shock behind the biggest egg-price moves. When a commercial layer flock is confirmed infected, the whole flock is depopulated, so a single detection can remove millions of laying hens from supply within days. Recovery is slow: repopulating a barn and bringing new hens into lay takes months. This tracker reports USDA APHIS confirmed detections in commercial egg-layer flocks by the confirmation date, with the affected-bird counts APHIS publishes. It is a factual record of what has been confirmed, not a forecast.