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1.53am BST

- Maanvi Singh and Joan E Greve

12.22am BST

Samira Sadeque reports from New York:

The vast majority of employees at Fox Corporation, the umbrella company for the conservative Fox News channel, are vaccinated against coronavirus and those who are not will be required to do daily testing, according to a memo sent out from bosses - despite some of its biggest screen stars questioning the vaccine.

Related: Nearly all Fox staffers vaccinated for Covid even as hosts cast doubt on vaccine