Still mystery over E.coli outbreak source

German officials struggled on Monday to pinpoint the source of a deadly E. coli outbreak after initial tests on bean sprouts grown at a farm near Hamburg showed no traces of the bacteria. The farm in Bienenbuettel, Lower Saxony was named as the source on Sunday but 23 samples have shown up negative. Authorities are still waiting for results from 17 more tests. ... http://www.euronews.net/