At least 74 people have fallen ill with E. coli O157:H7 after dining at Federico’s Mexican Restaurant in Litchfield Park, Ariz., around July 18, according to Maricopa County Public Health spokeswoman Jeanene Fowler. Of those ill, 23 were or currently are hospitalized. Most of those patients have since been discharged. Fowler said that a report by the Arizona Republic originally made an erroneous statement that the outbreak began in June, when the first illness onset dates did not occur until July 22. Investigators have still not determined the exact source of the contamination, though the investigation has not yet been declared over. Food safety law firm Marler Clark has filed lawsuits on behalf of a number of Federico’s customers who fell ill in the outbreak, including two minors who were hospitalized and developed hemolytic uremic syndrome, a life-threatening kidney disease associated with severe E. coli infections. Marler Clark underwrites Food Safety News.