E.coli warning signs to look out for after supermarket sandwiches 'spark' fatal outbreak
![E.coli warning signs to look out for after supermarket sandwiches 'spark' fatal outbreak](https://i2-prod.dailystar.co.uk/incoming/article31977604.ece/ALTERNATES/s615/3_Fresh-deli-counter-in-a-Cora-hypermarket.jpg)
After one person in England has died following an E.coli outbreak thought to have been sparked by certain shop-bought sandwiches, an expert has explained how worried we need to be