the food chain is no way out of control - it's one of the most tightly regulated of our industries - but like all regulated industries, sometimes there is the odd slip up. nobody's lives have been put at risk with the recent use of horse meat - there have been more dangerous issues with things like E.coli O154 getting into the food chain which can kill - and some of that has come from independant butchers... 
and it doesn't matter how much regulation you try to put into place - sometimes things go wrong
and because traceability is one of the key cornerstones of food regulations, then the source is usually easily identified so can be rectified quickly
I'd be more concerned about going into hospital and coming out with a HAI, or being neglected for days on a ward whilst the chief nursing officer is filling in paperwork and attending meetings, than I woud be about food making me ill
Edited: 08/02/2013 at 16:19