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Table 8 FoodNet–Percent Change and 95% CI in Incidence of Laboratory–Confirmed Infections 2011

Percent change (and 95% confidence interval) in incidence of laboratory-confirmed bacterial and parasitic infections in 2011* compared with average annual incidence for 1996–1998 and for 2006–2008, by pathogen, Foodborne Diseases Active Surveillance Network (FoodNet), United States
  1996–1998 comparison period 2006–2008 comparison period
Pathogen/Syndrome % change (95% CI) % change (95% CI)
Campylobacter 22%↓ (15%↓ – 28%↓) 14%↑ (7%↑ – 21%↑)
Listeria§ 35%↓ (15%↓ – 50%↓) 8%↑ (14%↓ – 35%↑)
Salmonella 1%↓ (8%↓ – 7%↑) 6%↑ (0.5%↓ – 12%↑)
Shigella 65%↓ (51%↓ – 75%↓) 43%↓ (25%↓ – 56%↓)
STEC O157 42%↓ (28%↓ – 53%↓) 25%↓ (11%↓ – 37%↓)
STEC non-O157 NA**   NA
Vibrio 76%↑ (30%↑ – 137%↑) 15%↑ (8%↓ – 44%↑)
Yersinia 52%↓ (38%↓ – 62%↓) 5%↓ (24%↓ – 18%↑)
Cryptosporidium 24%↑ (17%↓ – 88%↑) 27%↑ (4%↓ – 68%↑)
Cyclospora NA NA
HUS†† NA 7%↓ (33%↓ – 28%↑ )

*Data are preliminary
Percent change reported as increase (↑) or as decrease (↓)
§Listeria cases defined as isolation of L. monocytogenes from a normally sterile site or, in the setting of miscarriage or stillbirth, isolation of L. monocytogenes from placental or fetal tissue
Shiga toxin-producing Escherichia coli
**Changes over time not evaluated
Change in incidence of postdiarrheal HUS in children aged <5 years for 2010

 
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