Deceased sea lion tests positive for Bird Flu in San Luis Obispo

Officials urge public to avoid approaching sick or dead marine wildlife

Mar. 28, 2026 at 2:23pm

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A deceased sea lion found along Morro Strand State Beach in San Luis Obispo County has tested positive for H5N1, also known as avian influenza or bird flu, marking the first confirmed case in a marine mammal in the county. While the risk to the public remains low, officials are advising community members and visitors to avoid approaching any sick, injured, or deceased marine mammals and seabirds.

Why it matters

The detection of bird flu in a marine mammal raises concerns about the potential spread of the virus to other wildlife and the possible risks to human health. San Luis Obispo County has seen previous outbreaks of H5N1 in wild birds and dairy cattle, underscoring the need for vigilance and public awareness.

The details

The deceased sea lion was discovered along Morro Strand State Beach and tested positive for the H5N1 virus by officials from the San Luis Obispo County Public Health Department, the California Department of Fish and Wildlife, and the Central California Marine Animal Response Team. While the risk to the public is considered low, authorities are urging community members and visitors to avoid approaching any sick, injured, or deceased marine mammals and seabirds, and to instead contact the appropriate agencies for assistance.

  • The deceased sea lion was found along Morro Strand State Beach.
  • The sea lion tested positive for H5N1, also known as avian influenza or bird flu.

The players

San Luis Obispo County Public Health Department

The local public health agency responsible for monitoring and responding to public health issues in the county.

California Department of Fish and Wildlife

The state agency responsible for managing and protecting California's wildlife and natural resources.

Central California Marine Animal Response Team

A team of experts that responds to and assists with marine animal emergencies and strandings in the central California region.

Dr. Penny Borenstein

The San Luis Obispo County Health Officer, who provided guidance on the public health implications of the bird flu detection.

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What they’re saying

“While the risk to the public remains low, it's understandable that people may have questions about their own health if they find themselves unexpectedly exposed to a sick or dead animal.”

— Dr. Penny Borenstein, San Luis Obispo County Health Officer

What’s next

The San Luis Obispo County Public Health Department is available to answer any questions from community members about the H5N1 virus and its potential impact on human health.

The takeaway

The detection of bird flu in a marine mammal highlights the importance of public vigilance and cooperation with local authorities when it comes to monitoring and responding to wildlife health issues. By avoiding contact with sick or deceased animals and reporting any concerns, the community can help prevent the potential spread of the virus and protect both wildlife and public health.