CDC FoodCORE Year Four Cumulative Metrics – Salmonella, Shiga Toxin-producing Escherichia coli, and Listeria (SSL)

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Data Report Period: January 1, 2014 to December 31, 2014  

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 777.7 (225 – 1422) 196.6 (73 – 863) 20.4 (10 – 53) 331.6
1b. Number of primary isolates/isolate-yielding specimens 704.7 (183 – 1321) 110.6 (32 – 227) 18.1 (9 – 47) 277.8
2a. Total number of STEC clinical specimens or samples received at PHL N/A 236.4 (83 – 749) N/A N/A
2b. Number; Percent isolate-yielding STEC specimens or samples N/A 104 (12 – 184);
50.6% (14% – 76%)		 N/A N/A
3. Median days from isolation/isolate-yielding specimen collection to receipt at PHL1 4.9 days (3 – 7 days) 3.9 days (3 – 5 days) 5.5 days (3 – 8 days) 4.8 days
4. Median days from receipt of isolate-yielding specimens at PHL to recovery of isolate 2.4 days (0 – 6 days) 3.1 days (0 – 8 days) 1.2 days (0 – 2 days) 2.2 days
5. Percent of primary isolates with serotype information1 98.7% (94 – 100%) 88.9% (66 – 100%) N/A 93.8%
6. Median days from isolate receipt (recovery) at PHL to serotype result1 3.2 days (2 – 6 days) 3.9 days (2 – 6 days) N/A 3.6 days
7. Percent of primary isolates with PFGE information1 95.8% (87 – 100%) 95% (85 – 100%) 88.9% (0 – 100%) 93.2%
8a. Median days from isolate receipt (recovery) at PHL to PulseNet upload1 5.5 days (3 – 17 days) 5.1 days (2 – 15 days) 3 days (2 – 5 days) 4.5 days
8b. Median days from isolate receipt (or recovery) to receipt at PFGE lab 2.3 days (1 – 5) 2.8 days (0 – 5 days) 1.5 days (1 – 2 days) 2.2 days
9. Number of laboratory confirmed cases reported to epidemiology staff1 726.1 (181 – 1392) 118 (11 – 222) 15.7 (9 – 37) 286.6
10a. Percent of cases with attempted interview1 98.9% (97 – 100%) 98% (92 – 100%) 99.1% (94 – 100%) 98.6%
10b. Median days from case report to interview attempt 0.8 days (0 – 2 days) 1 days (0 – 2 days) 0.9 days (0 – 2 days) 0.9 days
10c. Percent of cases with complete demographic data 89.8% (77 – 97%) 89.7% (69 – 100%) 95.2% (76 – 100%) 91.6%
10d. Percent of cases with exposure history1 87.3% (74 – 93%) 90.1% (85 – 100%) 85.3% (40 – 100%) 87.6%
10d-i. Percent of SSL cases with full shotgun or case exposure completed 77.3% (42 – 91%) 80.5% (37 – 94%) 81.8% (0 – 100%) 79.9%
10e. Percent of cases with serotype information 96.5% (91 – 100%) 92.6% (69 – 100%) N/A 94.6%
10f. Percent of cases with PFGE information 93.8% (82 – 100%) 91.8% (76 – 100%) 82.4% (0 – 100%) 89.3%
10f-i. Percent of cases with PFGE with complete epi data1 75% (53 – 88%) 77.4% (65 – 90%) 72.9% (0 – 93%) 75.1%
10g. Reasons for not interviewing cases 717 (7.3%) have reason for not interviewing 62 (6.0%) have reason for not interviewing 15 (1.5%) have reason for not interviewing 794 (4.9%) have reason for not interviewing
10g-i. Lost to Follow-up: Number; Percent 84.2 (18 – 333); 45.4% (9-93%) 5.8 (0 – 12); 31.3% (0 – 100%) 0.8 (0 – 1); 14.8% (0 – 50%) 30.3; 30.5% Sum = 544
10g-ii. Refused: Number; Percent 10.4 (3 – 25); 10.6% (1 – 25%) 1.7 (0 – 5); 12% (0 – 43%) 0.2 (0 – 1); 8.3% (0 – 33%) 4.1; 10.3% Sum = 86
10g-iii. Time lag too long: Number(Percent) 3 (0 – 13); 1.1% (0 – 4%) 0.2 (0 – 1); 0.1% (0 – 1%) 0 (0 – 0); 0% (0 – 0%) 1.1; 0.4% Sum = 19
10g-iv. Other: Number; Percent 17.3 (1 – 47); 23.6% (1 – 94%) 2 (0 – 9); 23.3% (0 – 82%) 1.7 (0 – 4); 69.1% (0 – 100%) 7.0; 38.7% Sum = 145
11. Number of clusters 63.8 (16 – 117) 8.6 (0 – 22) 1.6 (0 – 8) 24.7
12a. Number; Percent of clusters with routine interview of cases1 55.7 (5 – 117); 84.2% (31 – 100%) 9 (4 – 22); 93.6% (56 – 100%) 3 (1 – 8); 90% (50 – 100%) 22.6; 89.3%
12b. Number; Percent of clusters with supplemental/targeted interviewing of cases 13.7 (3 – 33); 24.1% (3 – 66%) 3.5 (0 – 10); 31.5% (0 – 56%) 2 (1 – 4); 73.2% (50 – 100%) 6.4; 42.9%
12c. Number; Percent of clusters where an analytic epidemiologic study conducted (>10 Salmonella or STEC cases, >5 Listeria cases)1 2 (0 – 7); 4.5% (0 – 20%) 0.7 (0 – 2); 6.9% (0 – 33%) 0.4 (0 – 1); 9.2% (0 – 33%) 1.0; 6.9%
13. Number; Percent of clusters with suspect vehicle/source identified1 5.8 (0 – 17); 8.1% (0 – 17%) 2 (0 – 9); 15.4% (0 – 50%) 0.2 (0 – 1); 10% (0 – 50%) 2.7; 11.2%
14. Number; Percent of clusters with confirmed vehicle/source identified1 3.9 (0 – 9); 7.5% (0 – 26%) 1.9 (0 – 6); 14.6% (0 – 33%) 1 (0 – 2); 45.8% (0 – 100%) 2.3; 22.6%
15. Number; Percent of clusters with identifa. Exclusion of ill person(s)ied vehicle/source with:
a. Exclusion of ill person(s) 1.6 (0 – 8); 11% (0 – 47%) 3.4 (0 – 15); 25% (0 – 100%) 0 (0 – 0); 0% (0 – 0%) 1.7; 12.0%
b. Remediation or closure 0.9 (0 – 4); 6% (0 – 25%) 2 (0 – 8); 15.4% (0 – 53%) 0.3 (0 – 1); 33.3% (0 – 100%) 1.1; 18.2%
c. Educational campaign 1.4 (0 – 5); 14.3% (0 – 63%) 2 (0 – 6); 16.3% (0 – 40%) 0 (0 – 0); 0% (0 – 0%) 1.1; 10.2%
d. Media/public messaging 1.6 (0 – 6); 18.8% (0 – 75%) 2 (0 – 7); 16% (0 – 47%) 0.7 (0 – 2); 22% (0 – 66%) 1.4; 18.9%
e. Regulatory action (recall, hold) 0.9 (0 – 4); 9.4% (0 – 50%) 1.2 (0 – 3); 10.6% (0 – 33%) 1 (0 – 2); 33% (0 – 66%) 1.0; 17.7%
16. Number; Percent of clusters linked to a restaurant/food establishment with EHA1 4.4 (0 – 15); 20.2% (0 – 75%) 2.3 (0 – 7); 26.2% (0 – 87%) 0.4 (0 – 1); 9.2% (0 – 33%) 2.4; 18.5%
17. Number; Percent of clusters with food/environmental sample collected for testing1 4 (1 – 13); 7.3% (1 – 21%) 2 (0 – 6); 11% (0 – 33%) 0.4 (0 – 1); 9.2% (0 – 33%) 2.1; 9.2%
18. Number; Percent of clusters where EH, Ag, regulatory, or food safety program staff contacted1 19 (2 – 109); 25.2% (6 – 100%) 3.9 (0 – 11); 24.3% (0 – 61%) 1.4 (0 – 2); 60% (0 – 100%) 8.1; 36.5%
19. Number; Percent of outbreaks with NORS form completed1 16.5 (1 – 109); 65.9% (3 – 100%) 4.1 (1 – 14); 84.1% (11 – 100%) 1.5 (1 – 2); 56.5% (13 – 100%) 7.4; 68.8%

1 Minimum reporting requirement for FoodCORE Centers

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