Health experts issued a warning yesterday about salmonella in Spanish eggs.

An estimated 6,000 people in England and Wales have been made ill over the past two years by strains of the bacteria linked to eggs imported from Spain.

Fifteen deaths in the same period have also been associated with the salmonella concerned, said the Health Protection Agency.

Imports make up a relatively small number of the eggs consumed in the UK, but the figure is steadily growing, said the agency.

Spain supplies the largest number of imported eggs, which are generally used in catering because they are cheaper than UK eggs.