The Connecticut Department of Public Health (DPH) and Connecticut Department
of Agriculture (DOA) are investigating an outbreak of Escherichia coli O157
associated with consumption of unpasteurized milk produced at a dairy farm in Simsbury, CT.
A total of four cases have been identified; one is laboratory-confirmed as E.
coli O157 at the DPH State Laboratory and two are presumptively positive for E.
coli O157 at clinical laboratories. All four patients were diagnosed with
hemolytic uremic syndrome (HUS) or thrombotic thrombocytopenic purpura (TTP); three required hospitalization. Three
patients are children, aged 2 to 7 years. Onset of symptoms occurred
during June 28 - July 15, 2008.
Unpasteurized milk was sold on site at the dairy farm and also distributed
to four food markets in the greater Hartford
area. The farm had voluntarily suspended all raw milk production on July
9 as a result of elevated coliform counts found on
routine testing that was done as part of the production process. Based on
patient interviews, raw milk consumed by the cases had known sell-by dates of
June 24, July 4, and July 13. The sell-by date is generally one week from
the production date.