I just received a copy of the State of California Report. Here is the summary:
In November 2011, a cluster of five young children with Escherichia coli (E. coli) 0157:H7 infection with matching pulse-field gel electrophoresis (PFGE) patterns was identified. Illness onsets were from August 25 to October 25, 2011. All five children reported drinking commercially available raw (unpasteurized) milk from a single dairy (Organic Pastures) and had no other common exposures. Statistical analysis of case patients’ exposures with a comparison group of E. coli 0157:H7 patients with non cluster PFGE patterns indicated a strong association with raw milk. The epidemiological findings led to a quarantine and recall of all Organic Pastures products except cheese aged more than 60 days, and investigations by the California Department of Public Health (CDPH) Food and Drug Branch (FOB) and the California Department of Food and Agriculture (CDFA). Environmental samples collected at Organic Pastures yielded E. coli 0157:H7 isolates that had PFGE patterns indistinguishable from the patient isolates. Organic Pastures raw milk consumed by the case-patients was likely contaminated with this strain of E. coli 0157:H7, resulting in their illnesses.