CDC OutbreakNet Enhanced 2020 Cumulative Metrics Data: Salmonella, Shiga Toxin–producing Escherichia coli, Listeria, Shigella, and Campylobacter [SSL(SC)]
Report Period: [January 1, 2020] to [December 31, 2020]
| SSL(SC) Performance Metrics: (See associated document 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) | 872 (64 – 3,592) | 151 (5 – 657) | 17 (0 –51) | 131 (0 – 932) | 146 (1 – 682) |
| 1b. Number of SSL(SC) primary isolates or isolate-yielding specimens | 790 (60 – 3,305) | 124 (3 – 585) | 15 (0 – 42) | 125 (0 – 909) | 119 (1 – 662) |
| 2a. Total number of preliminary positive SSL(SC) clinical specimens or samples received at PHL (regardless of if isolate-yielding or not) | 494 (6 – 1,594) | 210 (3 – 654) | 9 (0 – 51) | 76 (1 – 255) | 135 (0 – 660) |
| 2b. Total number and percent of isolate-yielding SSL(SC) clinical specimens or samples received at PHL | 422 (6 – 1,299); 84.9% (25.4% – 100%) | 110 (3 – 346); 56.1% (31.1% – 100%) | 9 (0 – 51); 84.2% (0% – 100%) | 45 (0 – 243); 52.7% (0% – 100%) | 72 (0 – 442); 63.3% (0% – 100%) |
| 3a. OPTIONAL: Percent of SSL(SC) primary isolates with PFGE testing at PHL | 14.1% (0% – 14.1%) | 2.1% (0% – 15%) | No cumulative data available | 3.1% (0% – 24.6%) | No cumulative data available |
| 3b. Percent of SSL(SC) primary isolates with WGS testing at PHL | 89% (13% – 100%) | 83.9% (3% – 100%) | 80.8% (0% – 100%) | 30.7% (0% – 100%) | 34.1% (0% – 100%) |
| 4a. OPTIONAL: Median time from SSL(SC) isolate receipt (or recovery) at PHL or PFGE request to pattern upload to PulseNet | No cumulative data available | No cumulative data available | 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 | 9.4 (4 – 20) days | 9.2 (4.3 – 20) days | 7.7 (3 – 31) days | 12.1 (0 – 25) days | 6.1 (0 – 14) |
| 5a. Total number of SSL(SC) cases reported to public health | 1,029 (35 – 6,600) | 219 (8 – 1,066) | 24 (0 – 211) | 246 (1 – 1,664) | 1,191 (43 – 5,900) |
| 5ai. OPTIONAL: Percent of SSL(SC) cases with isolates and isolate- yielding specimens submitted to PHL | 84.3% (56% – 100%) | 66.9% (35% – 90.7%) | 83.5% (50% – 100%) | 55.3% (3.7% – 93.8%) | 28.12% (0.2% – 64%) |
| 5b. Total number of laboratory confirmed SSL(SC) cases reported to epidemiology staff | 875.2 (24 – 5,889) | 97 (4 – 570) | 16 (0 – 63) | 142.92 (0 – 1,037) | 624 (19 – 4,178) |
| 5c. Total number of probable SSL(SC) cases reported to epidemiology staff | 152.3 (1 – 711) | 103 (0 –430) | 1 (0 –4) | 104 (0 – 663) | 565 (0 – 2,156) |
| 5d. Total number of suspect SSL(SC) cases reported to epidemiology staff | N/A | 17 (0 – 69) | .25 (0 – 2) | N/A | N/A |
| 6a. Percent of SSL(SC) cases with attempted interview | 83.2% (3.7% – 100%) | 87.8% (59.9% – 100%) | 87.8% (50% – 100%) | 76.7% (0% – 100%) | 71.7% (8.7% – 100%) |
| 6ai. Percent of laboratory confirmed cases with attempted interview | 82.7% (4.5% – 100%) | 87.4% (33% – 100%) | 89.8% (50% – 100%) | 68.4% (0% – 100%) | 72.6% (8.3% – 100%) |
| 6aii. Percent of probable cases with attempted interview | 81.9% (1.9% – 100%) | 91.6% (69.2% – 100%) | No cumulative data available | 72.6% (0% – 100%) | 71.3% (5% – 100%) |
| 6aiii. Percent of suspect cases with attempted interview | N/A | 56.4% (0% – 100%) | N/A | N/A | N/A |
| 6b. Median time from SSL(SC) case report to initial interview attempt | 3.5 (< 0 – 12) days | 3.1 (<1 – 20.4) days | 1.9 (<1 – 13) days | 8.4 (<1 – 97) days | 4.5 (<1 – 15) days |
| 6c. Percent of SSL(SC) cases with exposure history obtained | 68.9% (10.7% – 99.2%) | 77% (18.1% – 100%) | 80.9% (45.5% – 100%) | 64.5% (0% – 93%) | 63% (20.5% – 88.9%) |
| 6ci. OPTIONAL: Among SSL(SC) cases with an exposure history, percent with full shotgun or case exposure completed | 65.3% (16% – 98.6%) | 55.9% (0% – 98.6%) | 95.3% (62.9% – 100%) | 65.5% (0% – 100%) | 66.7% (0% – 100%) |
| 6cii. OPTIONAL: Time from case report to when an exposure history is obtained. | 5.7 (2 – 12) days | 12 (2-85) days | 4.5 (1-10) days | 5.6 (2-12) days | 6 (3 -12) days |
| 7. Number of SSL(SC) clusters | 1.7 (0– 15) | 7.1 (0 –31) | 2.4 (0 – 25) | 2.4 (0 – 29) | 0.9 (0 -8) |
| 8a. OPTIONAL: Total number and percent of SSL(SC) clusters with routine interview of cases3 | 1.7 (1 – 10); 83.3% (0% – 100%) | 7.8 (1 – 31); 95.7% (62.5% – 100%) | 2.6 (0 – 12); 93.5% (54.5% – 100%) | 1 (0 – 2); 87.5% (50% – 100%) | 1 (0 – 2); 100% |
| 8b.Total number and percent of SSL(SC) clusters where an analytic epidemiologic study was conducted3 | 0.5 (0 – 4); 40.9% (0% – 100%) | 1.9 (0 –12); 37.7% (0% – 100%) | 1.1 (0 –6); 53.1% (0% – 100%) | No cumulative data available | 0.4 (0 – 2); 55% (0% – 100%) |
| 9a. Total number and percent of SSL(SC) clusters with confirmed vehicle/source identified3 | 0.4 (0 – 2); 25.5% (0% – 100%) | 2.0 (0 – 11); 22.2% (0% – 50%) | 0.6 (0 –4); 21.6% (0% – 100%) | 0.5 (0 – 3); 22.8% (0% – 100%) | 0.3 (0 – 1); 50% (0% – 100%) |
| 9b. OPTIONAL: Total number and percent of SSL(SC) clusters with suspect vehicle/source identified3 | 0.1 (0-1); 20% (0%-100%) | 1.3 (0-5); 17.2% (0%-50%) | 1 (0-4); 41.7% (0%-100%) | 0.5 (0 – 1); 100% | 1 (0-4); 75% (50% – 100%) |
| 10. Total number and percent of SSL(SC) clusters where food or environmental sample collected for testing3 | .5 (0 – 2); 31.6% (0% – 100%) | 1.7 (0 – 5); 23.6% (0% – 100%) | 0.6 (0 – 2); 35.8% (0% – 100%) | No cumulative data available | 0.2 (0 – 1); 38% (0% – 100%) |
| 11. Total number and percent of SSL(SC) clusters where environmental health, agriculture, regulatory, or food safety program staff were contacted3 | 4.1 (0 – 22); 42.4% (0% – 100%) | 7.0 (0 – 41); 54.1% (0% – 100%) | 1.7 (0 – 15); 73.1% (0% – 100%) | 0.5 (0 – 4); 56.7% (0% – 100%) | 0.6 (0 – 2); 82.6% (13% – 100%) |
| 12a.Total number of SSL(SC) outbreaks, excluding multi-state outbreaks | 1.0 (0-3) | 3.4 (0-32) | No cumulative data available | 0.5 (0-4) | 0.6 (0 – 7) |
| 12b.Total number and percent of SSL(SC) outbreaks, excluding multi-state outbreaks, reported/submitted to NORS | 0.7 (0 – 2): 91.7% (50% – 100%) | 2.2 (0 – 11); 77.9% (0% – 100%) | No cumulative data available | 1.7 (1 – 3); 100% | 1.5 (0 – 6); 95.3% (86% – 100%) |
All data are cumulative. Data are only reported when available from 5 or more sites.
1Shiga Toxin-producing Escherichia coli
2Reporting is optional for Shigella and Campylobacter
3This metric is calculated for only those sites that reported having clusters in Metric 7
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