CDC says slivered onions are ‘likely source’ of McDonald’s E. coli infections

Slivered onions served on McDonald’s Quarter Pounders are the “likely source” of an outbreak of E. coli infections, the Centers for Disease Control and Prevention (CDC) said Wednesday.  The number of cases has now risen to 90 across 13 states, with five additional hospitalizations, the agency said.   All new illnesses occurred before McDonald’s and the supplier…