2019 Cumulative Metrics Data: Salmonella, Shiga Toxin-Producing Escherichia coli, Listeria, Shigella, and Campylobacter [SSL(SC)]

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Table showing 2019 cumulative metrics data
Performance Metrics: (See metrics page for complete language and definitions) Salmonella Measures Mean (Range) STEC1 Measures Mean (Range) Listeria Measures Mean (Range) Shigella Measures2 Mean (Range) Campylobacter Measures2 Mean (Range)
1a. Total number of SSL(SC) isolates and isolate-yielding specimens submitted to or recovered at the Public Health Lab (PHL) 1,497  (78 – 6761) 261 (2 – 1,145) 20 (0 –61) 236 (1 – 1383) 236 (0 – 1182)
1b. Number of SSL(SC) primary isolates or isolate-yielding specimens 1,131 (72 – 4289) 212 (1 – 1,101) 20 (0 – 65) 183 (1 – 1346) 119 (0 – 527)
2a. Total number of preliminary positive SSL(SC) clinical specimens or samples received at PHL (regardless of if isolate-yielding or not) 778 (2 – 2,705) 394 (2 – 1,427) 9 (0 – 41) 188 (1 – 680) 288 (1 – 1183)
2b. Total number and percent of isolate-yielding SSL(SC) clinical specimens or samples received at PHL 600 (2 – 2,458); 85.3% (69.9% – 100%) 176 (2 – 675); 54.2% (28.2% – 100%) 10 (0 – 41); 64.3% (0% – 100%) 95 (1 – 406); 55.9% (7% – 100%) 235 (0 – 1182); 57.7% (2.6% – 100%)
3a. OPTIONAL: Percent of SSL(SC) primary isolates with PFGE testing at PHL 47.4% (0% – 100%) 43.1% (0% – 100%) 19.6% (0% – 100%) 34.2% (0% – 100%) 11.5% (0% – 47%)
3b.  Percent of SSL(SC) primary isolates with WGS testing at PHL 83.4% (36.8% – 100%) 86.1% (29.6% – 100%) 98.4% (75% – 100%) 39.8% (0% – 100%) 44.7% (0% – 100%)
4a. OPTIONAL:  Median time from SSL(SC) isolate receipt (or recovery) at PHL or PFGE request to pattern upload to PulseNet 4.3  (2 – 10) days 3.8  (2 – 9) days No cumulative data available No cumulative data available No cumulative data available
4b. Median time from SSL(SC) isolate receipt (or recovery) at PHL or WGS request to sequence upload to PulseNet 10.9 (3 – 35) days 8.7 (2 – 25) days 6.9 (3 – 11) days 13.9 (2-19) days 21.9 (10-50)
5a. Total number of SSL(SC) cases reported to public health 1,416  (70 – 7,224) 399 (8 – 2,489) 23 (0 – 125) 365 (1 – 3,217) 1,585 (7 – 9,876)
5ai. OPTIONAL: Percent of SSL(SC) cases with isolates and isolate- yielding specimens submitted to PHL 83.2% (64.0% – 95.4%) 67.4% (40.8% – 92.8%) 65.2% (0% – 100%) 61.6% (11.5% – 98.5%) 29.7% (3% – 92.5%)
5b. Total number of laboratory confirmed SSL(SC) cases reported to epidemiology staff 1,194 (67 – 6,242) 177 (2 – 1,143) 22 (0 – 121) 219 (1 – 1,857) 803 (7 – 6,735)
5c. Total number of probable SSL(SC) cases reported to epidemiology staff 218.9 (2 – 1,593) 200 (1 –1,174) 1 (0 –5) 156 (0 – 1360) 781 (0 – 3,276)
5d. Total number of suspect SSL(SC) cases reported to epidemiology staff N/A 22.8 (0 – 172) 1 (0 – 4) N/A N/A
6a. Percent of SSL(SC) cases with attempted interview 93.2% (66.5% – 100%) 96.7% (81.1% – 100%) 92.0% (50% – 100%) 88.9% (23.8% – 100%) 83.4% (0% – 100%)
6ai. Percent of laboratory confirmed cases with attempted interview 93.9% (65.3% – 100%) 96.7% (80.8% – 100%) 92.5% (50% – 100%) 89.1% (33.3% – 100%) 85.8% (0% – 100%)
6aii. Percent of probable cases with attempted interview 90.12% (58.6% – 100%) 96.8% (82.6% – 100%) No cumulative data available 79.4% (0% – 100%) 80.8% (0% – 100%)
6aiii. Percent of suspect cases with attempted interview N/A 86.2% (41.7% – 100%) N/A N/A N/A
6b. Median time from SSL(SC) case report to initial interview attempt 2.0 (<1 – 7.2) days 1.5 (<1 – 5.5) days 1.9 (<1 – 13) days 2.3 (<1 – 8) days 2.7 (<1 – 7) days
6c. Percent of SSL(SC) cases with exposure history obtained 79.4% (57.7% – 95.2%) 84.0% (57.1% – 95.4%) 80.9% (45.5% – 100%) 79.9% (37.5% – 100%) 75.5% (46% – 100%)
6ci. OPTIONAL: Among SSL(SC) cases with an exposure history, percent with full shotgun or case exposure completed 57.5% (6.9% – 100%) 72.8% (7.3% – 100%) 95.3% (62.9% – 100%) 52.0% (0% – 100%) 66.7% (0% – 100%)
6cii. OPTIONAL: Time from case report to when an exposure history is obtained. 3.9 (2 – 10) days 3.6 (1-14) days 4.5 (1-10) days 4.4 (1-13) days 5 (2 -12)
7. Number of SSL(SC) clusters 32.1 (3– 106) 11.6 (0 –41) 2.4 (0 – 25) 3.7 (0 – 14) 2.1 (0 -21)
8a. OPTIONAL: Total number and percent of SSL(SC) clusters with routine interview of cases3 23.8 (3 – 86); 96.1% (81.1% – 100%) 7.5 (1 – 37); 98.8% (90.2% – 100%) 2.6 (0 – 12); 93.5% (54.5% – 100%) 4 (0 – 9); 82.4% (0% – 100%) 1.5 (0 – 6); 77.3% (0% – 100%)
8b.Total number and percent of SSL(SC) clusters where an analytic epidemiologic study was conducted3 9.0 (0 – 36); 31.6% (0% – 100%) 2.9 (0 –16); 30.9% (0% – 100%) 1.1 (0 –6); 53.1% (0% – 100%) 0.9(0 – 5); 22.7% (0% – 100%) 0.7 (0 – 3); 26.2% (0% – 100%)
9a. Total number and percent of SSL(SC) clusters with confirmed vehicle/source identified3 6.6 (0 – 20); 23.7% (0% – 67%) 2.0 (0 – 11); 22.2% (0% – 50%) 0.6 (0 –4); 21.6% (0% – 100%) 0.6 (0 – 4); 8.0% (0% – 50%) 0.6 (0 – 2); 35.1% (0% – 100%)
9b. OPTIONAL: Total number and percent of SSL(SC) clusters with suspect vehicle/source identified3 5.0 (1-14); 21.2% (6%-50%) 1.3 (0-5); 17.2% (0%-50%) 1 (0-4); 41.7% (0%-100%) 1.3 (0-4); 32.0%(0%-100%) 0.5 (0-2); 36.2% (0% – 100%)
10. Total number and percent of SSL(SC) clusters where food or environmental sample collected for testing3 3.1 (0 – 11); 12.9% (0% – 44%) 1.7 (0 – 5); 23.6% (0% – 100%) 0.6 (0 – 2); 35.8% (0% – 100%) 0.1 (0 – 1); 1.5% (0% – 20%) 0.2 (0 – 1); 20% (0% – 100%)
11. Total number and percent of SSL(SC) clusters where environmental health, agriculture, regulatory, or food safety program staff were contacted3 14.1 (0 – 106); 35.3% (0% – 100%) 7.0 (0 – 41); 54.1% (0% – 100%) 3.1 (0 – 22); 73.8% (0% – 100%) 1.3 (0 – 4); 50.8% (0% – 100%) 1.2 (0 – 3); 58.8% (0% – 100%)
12a.Total number of SSL(SC) outbreaks, excluding multi-state outbreaks 8.4 (0-75) 3.4 (0-32) 0.8 (0-17) 1.0 (0-3) 1.6 (0 – 21)
12b.Total number and percent of SSL(SC) outbreaks, excluding multi-state outbreaks, reported/sumbsitted to NORS 4.2 (0 – 21): 74.8% (0% – 100%) 2.2 (0 – 11); 77.9% (0% – 100%) No Cumulative Data Available 1.3 (0 – 3); 87.3% (11.1% – 100%) 2.6 (0 – 20); 99.5% (95% – 100%)

All data are cumulative. Data are only reported when available from 5 or more sites.

  1. Shiga Toxin-producing Escherichia coli
  2. Reporting is optional for Shigella and Campylobacter
  3. This metric is calculated for only those sites that reported having clusters in Metric 7.

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Page last reviewed: April 16, 2021
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Foodborne, Waterborne, and Environmental Diseases (DFWED)