San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

The discovery of bird flu in the San Mateo backyard flock prompted health officials to remind people to take biosecurity measures.

Authorities in San Mateo County are asking people to take precautions after two cases of bird flu were detected there. The first case was in a backyard poultry flock in the city of San Mateo. Then, most recently,

H5N1, known as bird flu, has been found in San Mateo County this week, according to state and local health officials. San Mateo County officials said Thursday that bird flu was found in a stray cat in Half Moon Bay.

Health leaders on the Peninsula are warning pet owners to be on the lookout for symptoms after a stray cat in Half Moon Bay came down with bird flu and had to be put down.

After bird flu was detected in a stray cat in Half Moon Bay this week, health officials in San Mateo County are urging pet owners to contact a veterinarian if their pet shows any

After bird flu was detected in a stray cat in Half Moon Bay this week, health officials in San Mateo County are urging pet owners to contact a veterinarian if their pet shows any symptoms of the virus.