Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Figures—2013 Preliminary Data

FoodNet uses a main-effects, log-linear Poisson regression (negative binomial) model to estimate changes in the incidence of infection. The model adjusts for the increase in the number of FoodNet sites since 1996 and for variation in the incidence of infections among sites. The average annual incidence for 1) 1996–1998 (1997–1998 for Cryptosporidium), the first years of surveillance, 2) a more recent 3-year period (2006–2008), and 3) the preceding 3 years (2010–2012) are used for comparisons. The model is used to calculate the estimated change in incidence (relative rate) between 2013 and the comparison periods, with 95% confidence intervals (CI). In the figures that report percentage change, the percentage change for the current year is calculated by comparison with the appropriate comparison period and graphed along with the 95% confidence interval. In the figures that report relative rate, the relative rate for each year is graphed. For STEC non-O157, only change since 2010–2012 was assessed because diagnostic practices changed before then; for Cyclospora, change was not assessed because data were sparse.

FoodNet also uses the negative binomial model to measure overall trends in incidence. In this model, data for Campylobacter, Listeria, Salmonella, STEC O157, Vibrio, and Yersinia, the bacterial pathogens for which >50% of illnesses are estimated to be transmitted by food, are combined, weighting them by incidence of infection for each pathogen.

Figure 1. Percentage change in incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013 compared with average annual incidence during 1996–1998, by pathogen, FoodNet

Figure 1.  Percent change in incidence of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013 compared with average annual incidence during 1996–1998, by pathogen, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that pathogen compared with 1996–1998. The actual incidences of these infections cannot be determined from the graph.
Data are preliminary
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line
Shiga toxin-producing Escherichia coli

Top of Page

Figure 2. Relative rates of culture-confirmed infections with Campylobacter, STEC* O157, Listeria, Salmonella, and Vibrio compared with 1996–1998 rates, by year, FoodNet 1996–2013

Figure 2.  Relative rates of culture-confirmed infections with Campylobacter, STEC O157, Listeria, Salmonella, and Vibrio compared with 1996–1998 rates, by year, FoodNet 1996–2013

*Shiga toxin-producing Escherichia coli
The position of each line indicates the relative change in the incidence of that pathogen compared with 1996–1998. The actual incidences of these infections cannot be determined from this graph. Data for 2013 are preliminary.

Data for Figure 2

Top of Page

Figure 3. Relative rates of culture-confirmed infections with Shigella and Yersinia, and laboratory-confirmed infections with Cryptosporidium compared with 1996–1998 rates, by year, FoodNet 1996–2013*

Figure 3.  Relative rates of culture-confirmed infections with Shigella and Yersinia, and laboratory-confirmed infections with Cryptosporidium compared with 1996–1998 rates, by year, FoodNet 1996–2013

*The position of each line indicates the relative change in the incidence of that pathogen compared with 1996–1998. The actual incidences of these infections cannot be determined from this graph. Data for 2013 are preliminary.

Data for Figure 3

Top of Page

Figure 4.  Percentage change in incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013 compared with average annual incidence during 2006–2008, by pathogen, FoodNet

Figure 4.  Percentage change in incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013† compared with average annual incidence during 2006–2008, by pathogen, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that pathogen compared with 2006–2008.  The actual incidences of these infections cannot be determined from the graph.
Data are preliminary
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line
Shiga toxin-producing Escherichia coli

Top of Page

Figure 5. Relative rates of culture-confirmed infections with Campylobacter, STEC* O157, Listeria, Salmonella, and Vibrio compared with 2006–2008 rates, by year, FoodNet 2006–2013

Figure 5. Relative rates of culture-confirmed infections with Campylobacter, STEC* O157, Listeria, Salmonella, and Vibrio compared with 2006–2008 rates, by year, FoodNet 2006–2013†

*Shiga toxin-producing Escherichia coli
The position of each line indicates the relative change in the incidence of that pathogen compared with 2006–2008. The actual incidences of these infections cannot be determined from this graph. Data for 2013 are preliminary.

Data for Figure 5

Top of Page

Figure 6. Relative rates of culture-confirmed infections with Shigella, Yersinia, and laboratory-confirmed infections with Cryptosporidium  compared with 2006–2008 rates, by year, FoodNet 2006–2013*

Figure 6. Relative rates of culture-confirmed infections with Shigella, Yersinia, and laboratory-confirmed infections with Cryptosporidium compared with 2006–2008 rates, by year, FoodNet 2006–2013*

*The position of each line indicates the relative change in the incidence of that pathogen compared with 2006–2008. The actual incidences of these infections cannot be determined from this graph. Data for 2013 are preliminary. 

Data for Figure 6

Top of Page

Figure 7. Percentage change in incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013 compared with average annual incidence during 2010–2012, by pathogen, FoodNet

Figure 7. Percentage change in incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2013† compared with average annual incidence during 2010–2012, by pathogen, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that pathogen compared with 2010–2012. The actual incidences of these infections cannot be determined from the graph.
Data are preliminary
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line
Shiga toxin-producing Escherichia coli

Top of Page

Figure 8.  Percentage change in incidence* of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013 compared with average annual incidence during 1996–1998, by serotype, FoodNet

Figure 8.  Percentage change in incidence* of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013† compared with average annual incidence during 1996–1998, by serotype, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that serotype compared with 1996–1998.  The actual incidences of these infections cannot be determined from the graph.
Data are preliminary. Percentage change was not evaluated for serotypes Javiana and I 4,[5],12:i:-.
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line

Top of Page

Figure 9.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 1996–1998 rates, by year, FoodNet 1996–2013

Figure 9.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 1996–1998 rates, by year, FoodNet 1996–2013†

*Data for 2013 are preliminary. Salmonella serotypes included are: Enteritidis, Typhimurium, Newport, and Heidelberg. Changes over time for serotypes Javiana and I 4,[5],12:i:- were not evaluated.
The position of each line indicates the relative change in the incidence of that serotype compared with 1996–1998. The actual incidences of these infections cannot be determined from this graph.

Data for Figure 9

Top of Page

Figure 10.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 1996–1998 rates, by year, FoodNet 1996–2013

Figure 10.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 1996–1998 rates, by year, FoodNet 1996–2013†

*Data for 2013 are preliminary. Salmonella serotypes included are: Saintpaul, Infantis, Muenchen, and Oranienburg. Changes over time for serotypes Javiana and I 4,[5],12:i:- were not evaluated.
The position of each line indicates the relative change in the incidence of that serotype compared with 1996–1998. The actual incidences of these infections cannot be determined from this graph.

Data for Figure 10

Top of Page

Figure 11. Percentage change in incidence* of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013 compared with average annual incidence during 2006–2008, by serotype, FoodNet

Figure 11.  Percentage change in incidence* of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013† compared with average annual incidence during 2006–2008, by serotype, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that serotype compared with 2006–2008. The actual incidences of these infections cannot be determined from the graph.
Data are preliminary
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line

Top of Page

Figure 12.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 2006–2008 rates, by year, FoodNet 2006–2013

Figure 12.  Relative rates of culture-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 2006–2008 rates, by year, FoodNet 2006–2013†

*Data for 2013 are preliminary. Salmonella serotypes included are: Enteritidis, Typhimurium, Newport, Javiana, and I 4,[5],12:i:-.
The position of each line indicates the relative change in the incidence of that serotype compared with 2006–2008. The actual incidences of these infections cannot be determined from this graph.

Data for Figure 12

Top of Page

Figure 13.  Relative rates of laboratory-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 2006–2008 rates, by year, FoodNet 2006–2013

Figure 13.  Relative rates of laboratory-confirmed Salmonella infections with the top Salmonella serotypes in 2013* compared with 2006–2008 rates, by year, FoodNet 2006–2013†

*Data for 2013 are preliminary. Salmonella serotypes included are: Heidelberg, Saintpaul, Infantis, Muenchen, and Oranienburg.
The position of each line indicates the relative change in the incidence of that serotype compared with 2006–2008. The actual incidences of these infections cannot be determined from this graph.

Data for Figure 13

Top of Page

Figure 14.  Percentage change in incidence* of laboratory-confirmed Salmonella infections with the top Salmonella serotypes in 2013 compared with average annual incidence during 2010–2012, by serotype, FoodNet

Figure 14.  Percentage change in incidence* of laboratory-confirmed Salmonella infections with the top Salmonella serotypes in 2013† compared with average annual incidence during 2010–2012, by serotype, FoodNet

*The estimates and confidence intervals presented indicate the relative change in the incidence of that serotype compared with 2010–2012. The actual incidences of these infections cannot be determined from the graph.
Data are preliminary
§No significant change = 95% confidence interval is both above and below the no change line; significant increase = estimate and entire 95% confidence interval are above the no change line; significant decrease = estimate and entire 95% confidence interval are below the no change line

Top of Page

Figure 15.  Relative rates of culture-confirmed infections with Campylobacter, STEC* O157, Listeria, Salmonella, Vibrio, and Yersinia, and overall measure of change, compared with 1996–1998 rates, by year, FoodNet 1996–2013

Figure 15.  Relative rates of culture-confirmed infections with Campylobacter, STEC* O157, Listeria, Salmonella, Vibrio, and Yersinia, and overall measure of change, compared with 1996–1998 rates, by year, FoodNet 1996–2013†

*Shiga toxin-producing Escherichia coli
The position of each line indicates the relative change in the incidence of that pathogen compared with 1996–1998. The actual incidences of these infections cannot be determined from this graph. Data for 2013 are preliminary.
§The measure of overall trends in incidence combines data for Campylobacter, Listeria, Salmonella, STEC O157, Vibrio, and Yersinia, the six key bacterial pathogens for which >50% of illnesses are estimated to be transmitted by food. The model weights by incidence of infection for each pathogen.

Data for Figure 15

Top of Page

 
Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
  • Contact CDC–INFO
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #