All poultry on the premises will be humanely culled and Defra has set up a 3km (1.86 mile) "protection zone" around the site along with a 10km (6.21 mile) "surveillance zone", ESCC added. The UK Health Security Agency says avian influenza is primarily a disease of birds and the risk to the general public's health is very low.

The U.S. Centers for Disease Control and Prevention (CDC) confirmed another human H5N1 avian flu case -- otherwise known as bird flu -- in California on Thursday, bringing the nationwide total of cases to 67.

The CDC announced on Thursday its recommendation to test hospitalized influenza A patients more quickly and thoroughly to distinguish between seasonal flu and bird flu.

Moderna has been awarded approximately $590 million from the federal government to help speed up the development of an mRNA-based bird flu vaccine, health officials said.

The US Department of Health and Human Services will award $590 million to Moderna to continue developing a vaccine to protect against bird flu, the pharmaceutical company announced Friday.

The U.S. government has awarded Moderna $590 million to advance the development of its bird flu vaccine, as the country doubles down on efforts to tackle increasing infections in humans.