Swine flu vaccination jabs could put patients at risk of a killer nerve disease, it was warned yesterday.

The Health Protection Agency has asked doctors to look out for a rise in a brain disorder called Guillain-Barré Syndrome.

Experts fear a possible repeat of an outbreak of GBS in America in 1976 which followed swine flu jabs.

Then, 25 people died from GBS and only one from swine flu - which was a similar strain to today's virus.

The new vaccine will be given to about 13million people during the first wave starting in October.

Priority will be given to people with an underlying health problem.

The agency's letter to doctors says: "GBS has been identified as a condition needing enhanced surveillance when the swine flu vaccines are rolled out." Some experts fear the new vaccine has not been thoroughly tested.