Almost all of the children and staff at Mayday Hospital who were exposed to a health worker infected with tuberculosis have been screened for the disease.

None of the 57 children and 31 staff have so far shown any signs of TB and Mayday bosses are hopeful that the risk of infection is low.

A Mayday Hospital spokesman said: "The process is not yet complete but none has so far shown any sign of active TB. This suggests that the risk of transmission from the infected healthcare worker is, as previously stated, extremely low.

"The few remaining people on the list for screening are being contacted.

"All the children screened will be given a follow-up appointment with a paediatrician in approximately six weeks time and staff in the chest clinic are continuing to offer support for them and their families."

Last week we revealed how 63 patients under the age of 16 and 34 members of staff who came into close contact with the infected worker were invited to come in for screening.

Parents of a further 250 children treated on the ward, who were not in prolonged contact with the infected health worker, were also written to.

The member of staff, whose details are not being made public, worked at Mayday Hospital's children's ward last year and has since been diagnosed with the infection. They no longer work for the NHS.