General Mills issued a recall of 10 million pounds of flour this week because of a possible link to an outbreak of E. coli. USA Today reports the outbreak has sickened 38 people in 20 states since December. The recall covers select bags of Gold Medal bleached and unbleached flour, bleached and unbleached Signature Kitchen flour, Gold Medal self-rising flour and Gold Medal Wondra quick-mixing flour. The Gold Medal brand is the most widely used flour in the United States, according to General Mills. The Centers for Disease Control found about half of the people sickened in the outbreak reported making something homemade with flour before becoming ill. General Mills noted no E. coli has been found in any of its flour products. The flour was milled at the company’s Kansas City, Missouri facility. General Mills noted flour is made by milling wheat, which is grown outdoors and carries the risk of bacteria and that the bacteria are killed by baking, frying or boiling.