Reports from the Centers for Disease Control and Prevention on the McDonald's E. coli outbreak show how disease detectives pieced together what was making people sick.

The CDC declared the E coli outbreak linked to McDonald's Quarter Pounders over after 104 cases across 14 states and at least one death.

The Centre for Disease Control and Prevention (CDC) has issued a major update regarding the E. Coli outbreak connected to McDonald’s Quarter Pounders.

The CDC and FDA have closed their investigations into an E. coli outbreak linked to McDonald's Quarter Pounder hamburgers after determining there is no longer a safety risk.

The CDC and FDA have officially ended the e.coli outbreak warning that began in October, after dozens of e.coli cases broke out across multiple states. The outbreak was linked to the slivered yellow onions sold by the Taylor Farms Colorado Spring's facility.

Federal health officials have concluded their investigation into a multi-state E. coli outbreak tied to contaminated slivered onions previously served on McDonald’s Quarter Pounder burgers. The outbreak,

An investigation into an E. coli outbreak linked to McDonald's Quarter Pounders has officially been closed, the U.S. Food and Drug Administration announced Tuesday. In total, 104 people from 14 states were sickened and 34 were hospitalized during the outbreak,