article_snippet: Quality and safety have always been our top priorities.
article_snippet: the CDC are deeply saddened and concerned for all those who have been affected.
article_snippet: In the United States, an estimated 1,600 people become seriously ill each year; approximately 16% of these illnesses result in death.
article_snippet: CNN's Debra Goldschmidt, Amanda Watts and Jacque Wilson contributed to this report.