Haemolytic uraemic syndrome - an unusual complication of some types of E. coli as well as other infections - has been seen in hundreds of current cases.

BBC: Q&A: E. coli outbreak

The post-mortem revealed that Bethany had died from a rare complication of her E.coli infection, called Haemolytic Uraemic Syndrome.

BBC: NEWS | Health | 'We wanted our child's post-mortem'