Hi there, Greco.
From what I've read, the e.coli was likely in the seeds.
If you google GMO and e.coli, there's lots of info.
3,000 people have been made ill and 30 have died from the outbreak in Germany.
Of course, If you grow your own, using trustworthy seed sources, no worries.
http://www.biofortified.org/2011/06/...gene-transfer/