CDC FoodCORE Year Three Cumulative Metrics – Salmonella, Shiga Toxin-producing Escherichia coli, and Listeria (SSL)
Data Report Period: January 1, 2013 to December 31, 2013
| Performance Metrics: (See SSL Metrics for complete language and definitions) |
Salmonella Measures Mean (Range) |
STEC Measures Mean (Range) |
Listeria Measures Mean (Range) |
SSL Measures Mean of Individual Means |
|---|---|---|---|---|
| 1a- Total number of isolates and isolate-yielding specimens1 | 944.7 (369 – 1505) | 144.3 (60 -293) | 21.1 (3 – 43) | 370.0 |
| 1b Number of primary isolates/isolate-yielding specimens | 873.9 (339 – 1342) | 124 (54 – 242) | 20.7 (3 – 41) | 339.5 |
| 2a- Total number of STEC clinical specimens or samples received at PHL | N/A | 270.1 (88 – 985) | N/A | N/A |
| 2b- Number; Percent isolate-yielding STEC specimens or samples | N/A | 112.7 (15 –293);52.9% (17 –82%) | N/A | N/A |
| 3- Median days from isolation /isolate-yielding specimen collection to receipt at PHL1 | 5.4 days (4 – 7 days) | 4.4 days (3 – 6 days) | 5.3 days (3 – 7 days) | 5.0 days |
| 4- Median days from receipt of isolate-yielding specimens at PHL to recovery of isolate | 2.2 days (1 – 4 days) | 2.8 days (1 – 4 days) | 1.3 days (1 – 2 days) | 2.1 days |
| 5- Percent of primary isolates with serotype information1 | 99.7% (99 – 100%) | 88.4% (58 – 100%) | N/A | 94.1% |
| 6- Median days from isolate receipt (or recovery) at PHL to serotype result1 | 3.9 days (3 – 6 days) | 3.4 days (1 – 6 days) | N/A | 3.7 days |
| 7- Percent of primary isolates with PFGE information1 | 99.9% (99 – 100%) | 97.9% (89 – 100%) | 98.6% (90 – 100%) | 98.8% |
| 8 Median days from isolate receipt (or recovery) at PHL to PFGE upload to PulseNet1 | 4.9 days (3 – 8 days) | 4 days ( 3 – 5 days) | 3.2 days (3 – 4 days) | 4.0 days |
| 9- Number of laboratory confirmed cases reported to epidemiology staff11 | 860.9 (321 – 1162) | 124.3 (8 – 231) | 17.7 (3 -32) | 334.3 |
| 10a- Percent of cases with attempted interview1 | 98.9% (97 – 100%) | 99.1% (96 – 100%) | 99% (93 – 100%) | 99.0% |
| 10b- Median days from case report to interview attempt | 1.7 days (0 – 5 days) | 1.6 days (0 – 4 days) | 1.6 days (0 – 4 days) | 1.6 days |
| 10c- Percent of cases with complete demographic data | 88% (77 – 98%) | 89.3% (72 – 100%) | 97.7% (88 -100%) | 91.7% |
| 10d- Percent of cases with exposure history1 | 82.6% (69 – 91%) | 92.6% (88 – 100%) | 85.9% (55 -100%) | 87.0% |
| 10d.i- Percent of SSL cases with full shotgun or case exposure completed | 80.8% (66 – 88%) | 88.8% (86 – 93%) | 82.5% (55 – 100%) | 84.0% |
| 10e- Percent of cases with serotype information | 95.7% (94 – 99%) | 93.9% (74 – 100%) | N/A | 94.8% |
| 10f.- Percent of cases with PFGE information | 95.6% (92 -100%) | 96.1% (89 – 100%) | 84.1% (28-100%) | 91.9% |
| 10f.i- Percent of cases with PFGE with complete epi data1 | 71.4% (40 – 89%) | 82.3% (65 – 100%) | 81.1% (57 – 100%) | 78.3% |
| 10g- Reasons for not interviewing cases | 618 (10.3%) have reason for not interviewing | 59 (6.8%) have reason for not interviewing | 18 (14.5%) have reason for not interviewing | 695 (9.9%) have reason for not interviewing |
| 10g.i- Lost to Follow-up: Number; Percent | 75.2 (43 – 143); 60% (14 – 99%) | 6.3 (0 – 12); 38.3% (0 – 82%) | 1 (0 -3); 23% (0 – 75%) | 27.5; 40.4% |
| 10g-ii. Refused: Number; Percent | 7.5 (0 -20); 7.2% (0 – 16%) | 1.7 (0 – 4); 14.3% (0 – 33%) | 0 (0 – 0); 0% (0 – 0%) | 3.1; 7.2% |
| 10g.iii- Time lag too long: Number(Percent) | 1.2 (0 – 3); 1% (0 – 3%) | 0 (0 – 0); 0% (0 – 0) | 0 (0 – 0); 0% (0 – 0%) | 0.4; 0.3% |
| 10g.iv- Other: Number; Percent | 19.2 (0 – 61); 17.7% (0 – 49%) | 1.8 (0 – 9); 2.8% (0 – 10%) | 2.6 (0 – 4); 57% (0 – 100%) | 7.9; 25.8% |
| 11- Number of clusters | 86.1 (55 – 115) | 11.7 (0 -25) | 4.1 (0 – 8) | 34.0 |
| 11a- Median and range of cluster size(primary cases only) | Median size: 2.2 (2 – 3) Minimum size: 1.2 (1 – 2) Maximum size: 24.3 (15 -34) |
Median size: 2.2 (2 -3) Minimum size: 1.4 (1 – 2) Maximum size: 6.8 (5 – 9) |
Median size: 1 (1 – 1) Minimum size: 1 (1 – 1) Maximum size: 1.8 (1 – 4) |
Median size: 1.8 Minimum size: 1.2 Maximum size: 11.0 |
| 12- Number; Percent of clusters with cases in multiple states | 32.9 (5 – 57); 36.6% (9 – 55%) | 6.7 (0 – 12); 33.8% (0 – 67%) | 3.7 (0 – 7); 74.2% (0 – 100%) | 14.4; 48.2% |
| 13a- Number; Percent of clusters with routine interview of cases1 | 78.1 (55 – 115); 91% (61–100%) | 13 (6 – 25); 94.5% (67 – 100%) | 4.7 (1 – 8); 91.7% (50 – 100%) | 31.9; 92.4% |
| 13b- Number; Percent of clusters with supplemental/targeted interviewing of cases | 16.6 (1 – 55); 20% (2 – 75%) | 6 (0 – 20); 33.2% (0 – 80%) | 1.2 (0 – 3); 28.7% (0 – 50%) | 7.9; 27.3% |
| 13c- Number; Percent of clusters where an analytic epidemiologic study conducted (>10 Salmonella or STEC cases, >5 Listeria cases)1 | 3.1 (0 – 9); 3.3% (0 – 10%) | 0.7 (0 – 3); 5.5% (0 – 25%) | 0.2 (0 -1); 8.3% (0 – 50%) | 1.3; 5.7% |
| 13.d- Median duration ( in days) of epidemiologic investigation, from cluster notification to end of investigation/close-out | 32.2 days (2 – 60 days) | 38.8 days (8 – 60 days) | 38.8 days (8 – 60 days) | 42.4 days |
| 14- Number; Percent of clusters with suspect vehicle/source identified1 | 8.6 (1 -20); 9.6% (2 – 19%) | 4.3 (0 – 13); 24.5% (0 – 52%) | 0.5 (0 – 1); 27.3% (0 – 100%) | 4.5; 20.5% |
| 15- Number; Percent of clusters with confirmed vehicle/source identified1 | 3.3 (0 – 7); 5.3% (0 – 11%) | 2 (0 – 8); 9.2% (0 – 32%) | 0.3 (0 – 1); 10.7% (0 – 50%) | 1.9; 8.4% |
| 16- Number; Percent of clusters with identified vehicle/source with: | ||||
| a. Exclusion of ill person(s) | 0.4 (0 – 1); 11.6% (0 – 50%) | 2.3 (0 – 6); 20.7% (0 – 33%) | No cumulative data available2 | 0.9; 10.8% |
| b. Remediation or closure | 0.7 (0 – 3); 12.5% (0 – 50%) | 2.5 (0 – 7); 29% (0 – 50%) | 0.3 (0 – 1); No cumulative data available2 | 1.2; 13.8% |
| c. Educational campaign | 2 (0 – 5); 35% (0 – 100%) | 3.7 (0 – 10); 24.3% (0 – 48%) | No cumulative data available2 | 1.9; 19.8% |
| d. Media/public messaging | 3.3 (0 – 8); 21.6% (0 – 56%) | 3.3 (1 – 9); 33.7% (25 – 43%) | 0.7 (0 – 1); No cumulative data available2 | 2.4; 26.8% |
| e. Regulatory action (recall, hold) | 2.5 (0 – 5); 35% (0 – 100%) | 2.5 (0 – 5); 33% (0 – 75%) | 0.7 (0 – 1); No cumulative data available2 | 1.9; 31% |
| 17- Number; Percent of clusters linked to a restaurant/food establishment with EHA1 | 5.4 (0 – 16); 35% (0 – 100%) | 2.5 (0 – 7); 39.2% (0 – 100%) | 0.3 (0 – 1); 25% (0 – 100%) | 2.7; 33.1% |
| 18- Number; Percent of clusters with food/environmental sample collected for testing1 | 3.7 (1 – 10); 4.4% (1 – 14%) | 2.2 (0 – 6); 13.5% (0 -29%) | 0.5 (0 – 1); 12.8% (0 – 50%) | 2.1; 10.2% |
| 19- Number; Percent of clusters where EH, Ag, regulatory, or food safety program staff contacted1 | 15.7 (1 – 43); 18.1% (2 – 48%) | 4.2 (0 – 11); 24.3% (0 – 52%) | 1 (0 – 4); 20% (0 – 57%) | 7.0; 20.8% |
| 20- Number; Percent of outbreaks with NORS form completed1 | 6.7 (1 – 16); 59.7% (2 – 100%) | 7.7 (2-17); 76% (67-81%) | No cumulative data available2 | 7.2; 67.85% |
1 Minimum reporting requirement for FoodCORE Centers
2 Cumulative data for this metric were not reported from 3 or more centers