First Cases of Highly Pathogenic Avian Influenza in Northern Elephant Seals Confirmed in California
SAN MATEO COUNTY - Cases at Año Nuevo State Park Mark State’s First Detection of the Disease in a Marine Mammal. Seven weaned elephant seal pups in California’s Año Nuevo State Park tested positive for highly pathogenic avian influenza (HPAI) H5N1, the U.S. Department of Agriculture’s National Veterinary Services Laboratory confirmed Tuesday evening.