Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Number of Infections and Incidence* per 100,000 Persons

*Annual incidence is reported as cases per 100,000 persons. Incidence is calculated by dividing the total number of infections with each pathogen by the population in the FoodNet surveillance system for that year.
Expand All expand all Collapse All collapse all

Table 2a. Number of infections all sites, 2004-2015

Table 2a. Number of culture-confirmed bacterial and laboratory-confirmed parasitic infections, and postdiarrheal hemolytic uremic syndrome (HUS), by year and pathogen, Foodborne Diseases Active Surveillance Network (FoodNet), United States, 2004–2015*
Pathogen/Syndrome Year
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Surveillance population (millions)†† 44.34 44.77 45.32 45.84 46.33 46.76 47.15 47.53 47.92 48.27 48.64 48.64
Campylobacter 5,686 5,692 5,770 5,871 5,859 6,066 6,375 6,785 6,810 6,622 6,465 6,309
Listeria† 114 131 129 118 121 149 125 135 123 123 116 116
Salmonella 6,498 6,504 6,689 6,828 7,459 7,029 8,274 7,815 7,843 7,307 7,439 7,728
Shigella 2,248 2,095 2,765 2,869 3,043 1,854 1,779 1,541 2,141 2,333 2,774 2,688
STEC§ O157 402 473 590 548 518 461 446 463 533 553 444 463
STEC non-O157 113 134 238 283 247 286 451 522 557 571 697 796
Vibrio 123 121 156 110 136 161 195 157 198 249 221 192
Yersinia 175 163 163 164 166 152 159 163 159 173 136 139
Cryptosporidium 637 1,327 879 1,225 1,052 1,348 1,296 1,358 1,258 1,217 1,189 1,612
Cyclospora 15 65 43 13 17 32 28 22 15 14 26 64
HUS** 31 44 66 62 52 44 57 38 44 46 30 –

*Data are preliminary
†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
Surveillance not conducted for this pathogen in this year
**Numbers of cases of postdiarrheal HUS in children aged <5 years
††U.S. Census Bureau population estimates for the surveillance area for 2014. Final incidence rates will be reported when population estimates for 2015 are available.

Download the table (pre-2004 data included): Table 2a. Number and Incidence of Infections by Year, 1996-2015 [XLS - 12KB]

Table 2b. Incidence of infection by Pathogen all sites, 2004-2015

Table 2b. Incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections, and postdiarrheal hemolytic uremic syndrome (HUS), by year and pathogen, Foodborne Diseases Active Surveillance Network (FoodNet), United States, 2004–2015†
Pathogen /
Syndrome		 Year 2010
National
health
objective§		 2020
National
health
objective
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Surveillance
population (millions)†††		 44.34 44.77 45.32 45.84 46.33 46.76 47.15 47.53 47.92 48.27 48.64 48.64    
Campylobacter 12.82 12.71 12.73 12.81 12.65 12.97 13.52 14.27 14.21 13.72 13.29 12.97 12.3 8.5
Listeria** 0.26 0.29 0.28 0.26 0.26 0.32 0.27 0.28 0.26 0.25 0.24 0.24 0.24 0.2
Salmonella 14.65 14.53 14.76 14.89 16.10 15.03 17.55 16.44 16.37 15.14 15.29 15.89 6.8 11.4
Shigella 5.07 4.68 6.10 6.26 6.57 3.96 3.77 3.24 4.47 4.83 5.7 5.53 N/A ++ N/A
STEC§§ O157 0.91 1.06 1.30 1.20 1.12 0.99 0.95 0.97 1.11 1.15 0.91 0.95 1.0 0.6
STEC non-O157 0.25 0.30 0.53 0.62 0.53 0.61 0.96 1.10 1.16 1.19 1.43 1.64 N/A N/A
Vibrio 0.28 0.27 0.34 0.24 0.29 0.34 0.41 0.33 0.41 0.52 0.45 0.39 N/A 0.2
Yersinia 0.39 0.36 0.36 0.36 0.36 0.33 0.34 0.34 0.33 0.36 0.28 0.29 N/A 0.3
Cryptosporidium 1.44 2.96 1.94 2.67 2.27 2.88 2.75 2.86 2.63 2.52 2.44 3.31 N/A N/A
Cyclospora 0.03 0.15 0.09 0.03 0.04 0.07 0.06 0.05 0.03 0.03 0.05 0.13 N/A N/A
HUS*** 1.05 1.48 2.21 2.05 1.71 1.45 1.88 1.26 1.47 1.55 1.01 – N/A 0.9

*Per 100,000 population
†Data are preliminary
§Healthy People 2010 objective targets for incidence of Campylobacter, Listeria, Salmonella, and Shiga toxin-producing Escherichia coli O157 infections
Healthy People 2020 objective targets for incidence of Campylobacter, Listeria, Salmonella, Shiga toxin-producing Escherichia coli O157, Vibrio, and Yersinia infections, and HUS
**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
††No national health objective exists for these pathogens
§§Shiga toxin-producing Escherichia coli
¶¶Surveillance not conducted for this pathogen in this year
***Incidence of postdiarrheal HUS in children aged <5 years; denominator is surveillance population aged <5 years
†††U.S. Census Bureau population estimates for the surveillance area for 2014. Final incidence rates will be reported when population estimates for 2015 are available.

Download the table (pre-2004 data included): Table 2b. Number and Incidence of Infections by Year, 1996-2015 [XLS - 24KB]

Table 3a. Number and Incidence of Infections by site, 2015

Table 3a. Number of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2015* and postdiarrheal hemolytic uremic syndrome (HUS) in 2014, by site and pathogen, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Pathogen/Syndrome California† Colorado† Connecticut Georgia Maryland Minnesota New Mexico New York† Oregon Tennessee Total 2015
Campylobacter 624 397 700 739 690 922 356 632 849 400 6,309
Listeria§ 19 5 22 16 12 3 3 15 14 7 116
Salmonella 598 316 450 2,157 931 976 423 486 518 873 7,728
Shigella 291 66 59 1,370 197 292 70 43 106 194 2,688
STEC O157 47 38 27 28 22 115 7 27 108 44 463
STEC non-O157 116 72 56 76 50 124 26 58 109 109 796
Vibrio 36 5 30 23 37 20 1 10 25 5 192
Yersinia 15 6 9 19 18 23 2 18 21 8 139
Cryptosporidium 63 69 77 391 103 316 54 99 197 243 1,612
Cyclospora 3 3 16 34 3 1 2 2 0 0 64
Total 1,812 977 1,446 4,853 2,063 2,792 944 1,390 1,947 1,883 20,107
HUS** 2 1 1 3 3 5 1 0 4 10 30

*Data are preliminary
†This FoodNet site includes only selected counties. California: Alameda, Contra Costa, and San Francisco; Colorado: Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson; New York: Albany, Allegany, Cattaraugus, Chautauqua, Chemung, Clinton, Columbia, Delaware, Erie, Essex, Franklin, Fulton, Genesee, Greene, Hamilton, Livingston, Monroe, Montgomery, Niagara, Ontario, Orleans, Otsego, Rensselaer, Saratoga, Schenectady, Schoharie, Schuyler, Seneca, Steuben, Warren, Washington, Wayne, Wyoming, and Yates.
§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
**Numbers of cases of postdiarrheal HUS in children aged <5 years

Download the table: Table 3a. Number and Incidence of Infections by Site, 2015 [XLS - 12KB]

Table 3b. Incidence of infection by sites, 2015

Table 3b. Incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2015† and postdiarrheal hemolytic uremic syndrome (HUS) in 2014, by site and pathogen, and national health objectives, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Pathogen / Syndrome California§ Colorado§ Connecticut Georgia Maryland Minnesota New Mexico New York§ Oregon Tennessee Total 2015 2010 National health objective 2020 National health objective**
Surveillance population (millions)††† 3.57 3.01 3.60 10.10 5.98 5.46 2.09 4.32 3.97 6.50 48.64    
Campylobacter 17.46 13.18 19.46 7.32 11.55 16.90 17.07 14.62 21.38 6.11 12.97 12.3 8.5
Listeria†† 0.53 0.17 0.61 0.16 0.20 0.05 0.14 0.35 0.35 0.11 0.24 0.24 0.2
Salmonella 16.73 10.49 12.51 21.36 15.58 17.88 20.28 11.24 13.05 13.33 15.89 6.8 11.4
Shigella 8.14 2.19 1.64 13.57 3.30 5.35 3.36 0.99 2.67 2.96 5.53 N/A§§ N/A
STEC¶¶ O157 1.31 1.26 0.75 0.28 0.37 2.11 0.34 0.62 2.72 0.67 0.95 1.0 0.6
STEC non-O157 3.25 2.39 1.56 0.75 0.84 2.27 1.25 1.34 2.75 1.66 1.67 N/A N/A
Vibrio 1.01 0.17 0.83 0.23 0.62 0.37 0.05 0.23 0.63 0.08 0.39 N/A 0.2
Yersinia 0.42 0.20 0.25 0.19 0.30 0.42 0.10 0.42 0.53 0.12 0.29 N/A 0.3
Cryptosporidium 1.76 2.29 2.14 3.87 1.72 5.79 2.59 2.29 4.96 3.71 3.31 N/A N/A
Cyclospora 0.08 0.10 0.44 0.34 0.05 0.02 0.10 0.05 0.00 0.00 0.13 N/A N/A
HUS*** 0.99 0.52 0.53 0.45 0.81 1.43 0.73 0.00 1.74 2.50 1.01 N/A 0.9

*Per 100,000 population
†Data are preliminary
§This FoodNet site includes only selected counties. California: Alameda, Contra Costa, and San Francisco; Colorado: Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson; New York: Albany, Allegany, Cattaraugus, Chautauqua, Chemung, Clinton, Columbia, Delaware, Erie, Essex, Franklin, Fulton, Genesee, Greene, Hamilton, Livingston, Monroe, Montgomery, Niagara, Ontario, Orleans, Otsego, Rensselaer, Saratoga, Schenectady, Schoharie, Schuyler, Seneca, Steuben, Warren, Washington, Wayne, Wyoming, and Yates.
Healthy People 2010 objective targets for incidence of Campylobacter, Listeria, Salmonella, and Shiga toxin-producing Escherichia coli O157 infections
**Healthy People 2020 objective targets for incidence of Campylobacter, Listeria, Salmonella, Shiga toxin-producing Escherichia coli O157, Vibrio, and Yersinia infections, and HUS
††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
§§No national health objective exists for these pathogens
¶¶Shiga toxin-producing Escherichia coli
***Incidence of postdiarrheal HUS in children aged <5 years; denominator is surveillance population aged <5 years
†††U.S. Census Bureau population estimates for the surveillance area for 2014. Final incidence rates will be reported when population estimates for 2015 are available.

Download the table: Table 3b. Number and Incidence of Infections by Site, 2015 [XLS - 13KB]

Table 4a. Number of infections by age group, 2015

Table 4a. Number of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2015*, by pathogen and age group, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Pathogen Age group (yrs)
<5 5-9 10-19 20-64 ≥65 Total
Total 3,485 1,656 1,854 10,484 2,624 20,107
Campylobacter 633 254 507 3,918 996 6,309
Listeria† 9 0 0 41 66 116
Salmonella 1,702 553 683 3,693 1,096 7,728
Shigella 582 560 211 1,231 104 2,688
STEC§ O157 110 74 89 156 34 463
STEC non-O157 200 62 148 313 73 796
Vibrio 2 12 10 123 45 192
Yersinia 22 5 13 60 39 139
Cryptosporidium 225 136 192 898 159 1,612
Cyclospora 0 0 1 51 12 64

*Data are preliminary
†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. In cases of pregnancy-associated listeriosis, case may be mother, infant, or both, depending on source(s) of isolation.
§Shiga toxin-producing Escherichia coli

Download the table: Table 4a. Number and Incidence of Infections by Age Group, 2015 [XLS - 11KB]

Table 4b. Incidence of infection by age group, 2015

Table 4b. Incidence* of culture-confirmed bacterial and laboratory-confirmed parasitic infections in 2015†, by pathogen and age group, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Pathogen Age group (yrs)
<5 5-9 10-19 20-64 ≥65 Total
Campylobacter 21.39 8.20 8.04 13.34 14.44 12.97
Listeria§ 0.30 0.00 0.00 0.14 0.96 0.24
Salmonella 57.51 17.86 10.83 12.57 15.88 15.89
Shigella 19.67 18.08 3.35 4.19 1.51 5.53
STEC O157 3.72 2.39 1.41 0.53 0.49 0.95
STEC non-O157 6.76 2.00 2.35 1.07 1.06 1.64
Vibrio 0.07 0.39 0.16 0.42 0.65 0.39
Yersinia 0.74 0.16 0.21 0.20 0.57 0.29
Cryptosporidium 7.60 4.39 3.04 3.06 2.30 3.31
Cyclospora 0.00 0.00 0.02 0.17 0.17 0.13

*Per 100,000 population
†Data are preliminary
§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. In cases of pregnancy-associated listeriosis, case may be mother, infant, or both, depending on source(s) of isolation.
Shiga toxin-producing Escherichia coli

Download the table: Table 4b. Number and Incidence of Infections by Age Group, 2015 [XLS - 11KB]

Table 5. Top 10 Salmonella serotypes, 2015

Table 5. Number and incidence* of culture-confirmed Salmonella infections caused by the top 10 Salmonella serotypes†, 2015§, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Rank Salmonella serotype Number of cases Incidence*
1 Enteritidis 1,358 2.79
2 Newport 816 1.68
3 Typhimurium 739 1.52
4 Javiana 557 1.15
5 I 4,[5],12:i:- 491 1.01
6 Poona 197 0.40
7 Muenchen 181 0.37
8 Heidelberg 153 0.31
9 Saintpaul 148 0.30
10 Infantis 144 0.30

*Per 100,000 persons
†Among 6,827 Salmonella isolates that were fully serotyped
§Data are preliminary

Download the table: Table 5. Number and Incidence of Salmonella Infections by Serotype, 2015 [XLS - 11KB] Table

Table 6. Shiga toxin-producing Escherichia coli serogroups (non-O157), 2015

Table 6. Number and incidence* of top 5 culture-confirmed Shiga toxin-producing Escherichia coli (STEC) non-O157 infections, by serogroup†, 2015§, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Rank STEC serogroup Number of cases Incidence*
1 26 198 0.41
2 103 161 0.33
3 111 111 0.23
4 121 29 0.06
5 145 21 0.04

*Per 100,000 persons
†Among 606 STEC isolates that were fully typed; additional serogroups include 118 (20), 45 (13), 186 (8), 5 (5), 71 (5),  113 (4), 91 (4), 128 (3), 98 (3), 117 (2), 156 (2), 183 (2), 69 (2), 1 (1), 119 (1), 146 (1), 174 (1), 175 (1), 178 (1), 22 (1), 28 (1), 3 (1), 32 (1), 61 (1), 77 (1), 84 (1)
§Data are preliminary

Download the table: Table 6. Number and Incidence of E. coli Infections by Serogroup, 2015 [XLS - 13KB] Table.

Table 7. Vibrio species, 2015

Table 7. Number and incidence* of culture-confirmed Vibrio species infections, by species†, 2015§, Foodborne Diseases Active Surveillance Network (FoodNet), United States
Rank Species Number of cases Incidence*
1 Vibrio parahaemolyticus 113 0.23
2 Vibrio alginolyticus 27 0.06
3 Vibrio vulnificus 12 0.02
4 Vibrio cholerae 7 0.01
5 Vibrio fluvialis 7 0.01
6 Vibrio hollisae 6 0.01
7 Vibrio mimicus 3 0.01

*Per 100,000 persons
†Among 175 isolates that were fully speciated
§Data are preliminary

Download the table: Table 7. Number and Incidence of Vibrio Infections by Species, 2015 [XLS - 10KB] Table

 Top of Page

Top