The Foodborne Diseases Active Surveillance Network (FoodNet) conducts active population-based surveillance in ten areas (Connecticut, Georgia, Maryland, Minnesota, New Mexico, Oregon, Tennessee, and selected counties in California, Colorado, and New York) for laboratory-confirmed cases of infection caused by Campylobacter, Cryptosporidium, Cyclospora, Listeria, Salmonella, Shiga toxin-producing Escherichia coli (STEC, including STEC O157 and STEC non-O157), Shigella, Vibrio, and Yersinia.
FoodNet also conducts surveillance for postdiarrheal hemolytic uremic syndrome (HUS), a complication of STEC infection characterized by renal failure and microangiopathic hemolytic anemia, through a network of pediatric nephrologists and infection-control practitioners. Hospital discharge data are reviewed to validate HUS diagnoses and verify the presence of diarrhea in the 21 days before HUS onset. This report contains preliminary postdiarrheal HUS data for 2010, rather than for 2011, because additional time is needed to review hospital records.
