Laboratory testing conducted by the New Mexico Department of Health on an unopened (intact) package of Bravo Farms Dutch Style Gouda Cheese purchased from a Costco retail location has identified E. coli O157:H7 matching the outbreak strain. This is the first confirmation from an unopened cheese sample, and is consistent with previous laboratory testing conducted on two opened packages of the Bravo Farms Dutch Style Gouda Cheese purchased at Costco, which also identified E. coli O157:H7 matching the outbreak strain. These opened packages were from two different case patients’ homes. Testing on two additional opened packages from other case patients’ homes is in process.
Thirty-seven persons infected with the outbreak strain of E. coli O157:H7 have been reported from five states. The number of ill persons identified in each state with this strain is as follows: AZ (19), CA (3), CO (10), NM (3) and NV (2). Dates of illness onset range from October 16, 2010 through October 27, 2010. Patients range in age from 1 to 85 years and the median age is 16 years. There have been 15 reported hospitalizations, 1 case of hemolytic uremic syndrome (HUS), and no deaths.