Legionnaires' disease showed that Legionnaires' disease was responsible and the immediate epidemiological investigation traced the source of the infection to the air-conditioning cooling tower on the roof of Stafford District Hospital. In March 1999, a large outbreak in the Netherlands occurred during the Westfriese Flora flower exhibition in Bovenkarspel; 318 people became ill and at least 32 people died. This was the second-deadliest outbreak since the 1976 outbreak and possibly the deadliest, as several people were buried before Legionnaires' disease had been diagnosed. The world's largest outbreak of Legionnaires' disease happened in July 2001 with people appearing at the hospital on July
2006 North American E. coli O157:H7 outbreak in spinach being infected, resulting in 141 hospitalizations, 31 people having kidney failure, and three deaths. 2006 North American E. coli O157:H7 outbreak in spinach The 2006 North American "E. coli" outbreak was an outbreak from organic spinach. The outbreak occurred in September 2006 and its probable origin was an Angus cattle ranch that had leased land to spinach grower. At least 276 consumer illnesses and 3 deaths have been attributed to the tainted produce. In September 2006, there was an outbreak of food-borne illness caused by "Escherichia coli" ("E. coli") bacteria found in uncooked spinach in 26 U.S. states. By October