Bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and dairy cows with several recent human cases.

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

Bird flu has been detected in a backyard poultry flock in San Mateo, local officials said Tuesday. No human cases have been linked to the flock, but the detection highlights the risk of H5N1 to people who live near,

As bird flu continues to spread across the United States, questions have emerged about the risk of contracting the virus from milk and eggs. Additionally, hundreds of dairy cow herds have been affected,