A hospital has reintroduced face mask rules in a number of departments amid a rise in flu cases.

Chesterfield Royal Hospital NHS Foundation Trust announced on Tuesday that staff, patients, and visitors were being asked to wear masks with "immediate effect".

The mandatory rule has been applied to the hospital's emergency department, wards and other areas where patients are admitted.

Krishna Kallianpur, chief nurse at Chesterfield Royal Hospital, said: "We have not taken this decision lightly, but the rise in flu cases has meant we needed to take action to promote safety for our patients and colleagues."