On 5 November, 2026, the U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the detection of highly pathogenic avian influenza (HPAI) H5N1 in 3 dairy herds (special ID: WA 042, WA 043, WA 044) in Washington.

On 4 November, 2026, the U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed the detection of highly pathogenic avian influenza (HPAI) in Commercial Table Egg Pullets in Pierce(47000 birds affected) county,Washington.

From 30 October, 2026 to 3 November, 2026, APHIS reported 23 wild birds (Black-billed magpie, Rock pigeon, Gadwall(5), Green-winged teal(5), Northern shoveler, American wigeon(9), Northern pintail) collected from 17 October in 2026 to 19 October in 2026 tested positive for EA H5 HPAI strain in (Yakima(2), Grant(21))counties, Washington.

Submitting Agency: NWDP(USDA Wildlife Services National Wildlife Disease Program)