Leek and potato soil linked to E. coli outbreak

Soil stuck on leeks and potatoes may have been the source of an E. coli outbreak in the UK earlier this year, according to the Health Protection Agency.

There were 250 cases scattered across England, Wales and Scotland between December 2010 and July 2011.

The Food Standards Agency said it was a "myth" that dirt did no harm.

Richard Westcott reports.