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Bird flu outbreak in California elephant seals prompts officials to cancel popular tours

Seven northern elephant seal pups tested positive for highly pathogenic avian influenza H5N1, prompting park closures and canceled tours to prevent virus spread, researchers said.

  • Seven weaned elephant seal pups tested positive for HPAI H5N1, confirmed Tuesday by the U.S. Department of Agriculture's National Veterinary Services Laboratory, prompting closure of Año Nuevo State Park tours until March 1.
  • Heightened surveillance allowed researchers to detect abnormal signs on Feb. 19–20, after Roxanne Beltran said her team `ramped up monitoring` due to concerns about virus spread.
  • UC Davis testing teams show about 30 animals have died at Año Nuevo Reserve, with weanling northern elephant seal pups showing tremors, seizures and respiratory signs; tests on about 30 more remain pending.
  • California State Parks will refund reservations for canceled seal-viewing tours and has closed the viewing area, urging people to avoid touching seals or pets while coordinating monitoring with NOAA Fisheries hotline.
  • Given past devastation abroad, including Argentina's 97% pup losses, the NSF Center for Pandemic Insights at UC Davis has scaled up surveillance with weekly updates and expanded monitoring of Piedras Blancas and Point Reyes National Sea Shore.
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Bird flu outbreak in California elephant seals prompts officials to cancel popular tours

Researchers have found avian flu in elephant seal pups at California’s Año Nuevo State Park, and officials have stopped seal-watching tours to help limit the spread of the virus.

·United States
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Kron 4 News broke the news in San Francisco, United States on Tuesday, February 24, 2026.
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