On the other hand acquiring this protein too slowly would give the immune system time to launch a response before the virus can escape - killing the virus and preventing infection, they said.

BBC: Flu virus 'knows when to attack'

Mr Lambourne said the airport's promise of reduced night-time flights and a fining system for aircraft which breached noise limits, offered as a response to the consultation, was "spin".

BBC: Artist's impression of the new look Luton Airport