2 people develop serious health issue as E.coli cases climb over 100 in St. Louis County area KSDK.comRestaurant's lettuce wasn't the source of a St. Louis E. coli outbreak, officials say KSDK.comSt. Louis caterer's lettuce tests negative for E. coli. 'Bad for Andre's,' says lawyer St. Louis Post-DispatchMissouri Health Department releases results of lettuce taken as part of investigation into E.