CDC FoodCORE Year Ten Cumulative Metrics Data – Salmonella, Shiga Toxin-producing Escherichia coli (STEC), and Listeria (SSL) plus Shigella and Campylobacter
Data Report Period: January 1, 2020 to December 31, 2020
Ten state and local health departments participate in FoodCORE. Data are only reported when available from three or more centers; ‘n’ indicates the number of centers reporting each metric.∗
| Performance Metrics: (See FoodCORE website for complete language and definitions) | Salmonella Mean (Range) | STEC Mean (Range) | Listeria Mean (Range) | Shigella Mean (Range) | Campylobacter Mean (Range) |
|---|---|---|---|---|---|
| 1a. Total number of isolates and isolate-yielding specimens | 794 (372–1599) n=10 |
173 (44–327) n=10 |
16 (5–36) n=10 |
89 (29–195) n=9 |
267 (31–766) n=9 |
| 1b. Number of primary isolates/isolate-yielding specimens | 732 (321–1582) n=10 |
158 (42–322) n=10 |
15 (5–33) n=10 |
81 (24–185) n=9 |
262 (29–746) n=9 |
| 2a. Total number of preliminary positive clinical specimens | 688 (383–1666) n=9 |
267 (87–649) n=10 |
n/a | 106 (11–283) n=8 |
371 (24–1053) n=8 |
| 2b. Number; Percent isolate-yielding preliminary positive clinical specimens | 634 (343–1582) 92% (86%–99%) n=9 |
153 (20–327) 57% (23%–98%) n=10 |
n/a | 65 (8–163) 61% (31%–87%) n=8 |
280 (19–766) 84% (71%–100%) n=8 |
| 3. Median days from isolation/isolate-yielding specimen collection to receipt at PHL | 4 (3–6) n=10 |
4 (2–9) n=10 |
5 (1–10) n=10 |
4 (2–6) n=9 |
4 (2–7) n=9 |
| 4. Median days from receipt of isolate-yielding specimens at PHL to recovery of isolate | 2 (1–4) n=7 |
3 (2–5) n=8 |
2 (0–4) n=7 |
3 (2–4) n=7 |
2 (0–4) n=8 |
| 5. Percent of primary isolates with serotype information | 100% (99%–100%) n=10 |
90% (66%–100%) n=10 |
n/a | 93% (40%–100%) n=9 |
98% (92%–100%) n=6 |
| 6. Median days from isolate receipt (or recovery) to serotype result | 5 (1–11) n=10 |
4 (0–10) n=10 |
n/a | 3 (1–7) n=9 |
5 (1–14) n=6 |
| 7. Percent of primary isolates with WGS information | 99% (97%–100%) n=10 |
99% (95%–100%) n=10 |
94% (54%–100%) n=10 |
72% (0%–100%) n=9 |
72% (0%–100%) n=8 |
| 8a. Median days from isolate receipt (or recovery) to WGS sequence being shared | 7 (4–10) n=10 |
8 (4–10) n=10 |
6 (4–10) n=10 |
8 (5–15) n=8 |
9 (4–13) n=6 |
| 8b. Median days from isolate receipt (or recovery) at WGS lab to upload to sequence being shared | 6 (4–10) n=10 |
6 (4–9) n=10 |
5 (4–8) n=10 |
7 (4–13) n=8 |
7 (4–12) n=6 |
| 9a. Number of reported laboratory confirmed cases | 679 (318–1549) n=10 |
131 (26–258) n=10 |
15 (7–36) n=10 |
91 (25–222) n=9 |
565 (285–1184) n=9 |
| 9b. Number of reported probable cases | 94 (22–194) n=10 |
118 (35–266) n=10 |
0 (0–1) n=10 |
71 (7–275) n=9 |
449 (123–1249) n=8 |
| 9c. Number of reported suspect cases | 2 (0–18) n=10 |
3 (0–9) n=10 |
0 (0–2) n=10 |
2 (0–11) n=9 |
n/a |
| 10a.1 Percent of confirmed cases with attempted interview | 97% (91%–100%) n=10 |
97% (88%–100%) n=10 |
96% (78%–100%) n=10 |
84% (20%–100%) n=8 |
79% (5%–100%) n=8 |
| 10a.2 Percent of probable/suspect cases with attempted interview | 90% (38%–100%) n=10 |
94% (81%–100%) n=10 |
80% (0%–100%) n=5 |
82% (24%–100%) n=8 |
78% (2%–100%) n=8 |
| 10b. Median days from confirmed/probable/suspect case report to interview attempt | 2 (0–6) n=10 |
2 (0–6) n=10 |
1 (0–4) n=10 |
1 (0–2) n=8 |
3 (1–5) n=8 |
| 10c. Median days from confirmed/probable/suspect case report to completed interview | 3 (0–9) n=10 |
3 (1–8) n=10 |
3 (0–8) n=10 |
2 (1–5) n=8 |
4 (1–8) n=8 |
| 10d. Percent of confirmed cases with complete demographic data | 91% (77%–100%) n=10 |
92% (78%–100%) n=10 |
95% (78%–100%) n=10 |
91% (65%–100%) n=8 |
83% (44%–98%) n=8 |
| 10e. Percent of confirmed cases with exposure history | 85% (74%–100%) n=10 |
87% (79%–94%) n=10 |
85% (69%–100%) n=10 |
72% (62%–88%) n=8 |
79% (64%–95%) n=8 |
| 10e.1 Percent of confirmed cases with full exposure interview | 89% (77%–100%) n=10 |
89% (70%–100%) n=10 |
89% (56%–100%) n=10 |
90% (71%–100%) n=8 |
89% (70%–100%) n=8 |
| 10f. Percent of confirmed cases with serotype information | 85% (13%–99%) n=10 |
77% (25%–100%) n=10 |
n/a | 77% (1%–100%) n=9 |
n/a |
| 10g. Percent of confirmed cases with WGS information | 91% (79%–99%) n=10 |
87% (68%–99%) n=10 |
87% (61%–100%) n=10 |
58% (0%–96%) n=9 |
36% (0%–91%) n=8 |
| 10g.1 Percent of confirmed cases with WGS with exposure history obtained | 80% (73%–87%) n=10 |
82% (70%–93%) n=10 |
81% (56%–100%) n=10 |
77% (45%–100%) n=8 |
81% (56%–100%) n=7 |
| 10h. Reasons for not interviewing cases | |||||
| 10h.1 Number; Percent Lost to Follow-up/Refused Interview | 115 (37–312) 16% (6%–24%) n=10 |
19 (7–44) 15% (6%–26%) n=10 |
2 (0–3) 15% (0%–43%) n=10 |
n/a | n/a |
| 10h.2 Number; Percent Lag Time Too Long | 2 (0–8) 0% (0%–2%) n=9 |
0 (0–2) 0% (0%–3%) n=9 |
0 (0–0) 0% (0%–0%) n=9 |
n/a | n/a |
| 10h.3 Number; Percent Other | 23 (0–89) 3% (0%–12%) n=9 |
2 (0–13) 2% (0%–8%) n=9 |
1 (0–3) 6% (0%–33%) n=9 |
n/a | n/a |
| 11. Number of investigations | 40 (11–77) n=10 |
9 (0–24) n=10 |
1 (0–6) n=10 |
n/a | n/a |
| 12a. Number; Percent of investigations with routine interview of cases | 36 (10–77) 81% (8%–100%) n=10 |
10 (4–24) 90% (14%–100%) n=9 |
2 (0–6) 57% (0%–100%) n=7 |
n/a | n/a |
| 12b. Number; Percent of investigations with supplemental/targeted interviewing of cases | 8 (2–14) 21% (8%–48%) n=9 |
3 (1–9) 29% (11%–69%) n=8 |
0 (0–1) 10% (0%–33%) n=5 |
n/a | n/a |
| 12c. Number; Percent of investigations where an analytic epidemiologic study conducted | 3 (0–12) 6% (0%–18%) n=10 |
2 (0–7) 6% (0%–54%) n=9 |
0 (0–1) 7% (0%–33%) n=7 |
n/a | n/a |
| 13. Number; Percent of investigations with suspect vehicle/source identified | 6 (2–15) 17% (0%–64%) n=10 |
2 (0–8) 19% (0%–75%) n=9 |
0 (0–1) 31% (0%–100%) n=7 |
n/a | n/a |
| 14. Number; Percent of investigations with confirmed vehicle/source identified | 7 (0–16) 18% (0%–55%) n=10 |
1 (0–5) 11% (0%–38%) n=9 |
0 (0–1) 5% (0%–33%) n=7 |
n/a | n/a |
| 15. Number; Percent of investigations with source identified with: | |||||
| a. Exclusion of ill person(s) | 1 (0–5) 2% (0%–9%) n=10 |
1 (0–6) 7% (0%–46%) n=9 |
0 (0–0) 0% (0%–0%) n=6 |
n/a | n/a |
| b. Remediation or closure | 1 (0–5) 2% (0%–17%) n=10 |
1 (0–3) 4% (0%–23%) n=9 |
0 (0–1) 6% (0%–33%) n=6 |
n/a | n/a |
| c. Educational campaign | 1 (0–5) 5% (0%–25%) n=10 |
1 (0–6) 5% (0%–46%) n=9 |
0 (0–0) 0% (0%–0%) n=6 |
n/a | n/a |
| d. Media/public messaging | 4 (0–13) 11% (0%–45%) n=10 |
1 (0–4) 5% (0%–31%) n=9 |
0 (0–1) 6% (0%–33%) n=6 |
n/a | n/a |
| e. Regulatory action (recall, hold) | 2 (0–5) 4% (0%–10%) n=10 |
1 (0–3) 8% (0%–25%) n=9 |
0 (0–1) 8% (0%–33%) n=6 |
n/a | n/a |
| 16. Number; Percent of investigations linked to a restaurant/food establishment with EHA | 3 (0–7) 30% (0%–100%) n=10 |
1 (0–2) 26% (0%–100%) n=9 |
0 (0–1) 14% (0%–100%) n=7 |
n/a | n/a |
| 17. Number; Percent of investigations with food/environmental sample collected for testing | 2 (0–12) 7% (0%–41%) n=10 |
0 (0–3) 3% (0%–17%) n=9 |
0 (0–1) 5% (0%–33%) n=7 |
n/a | n/a |
| 18. Number; Percent of investigations where environmental health partners were contacted | 7 (0–25) 19% (0%–86%) n=10 |
2 (0–7) 19% (0%–54%) n=9 |
1 (0–2) 14% (0%–67%) n=6 |
n/a | n/a |
| 19. Number; Percent of outbreaks with NORS form completed | 9 (1–23) 83% (13%–100%) n=10 |
2 (0–6) 60% (0%–100%) n=9 |
0 (0–1) 7% (0%–33%) n=7 |
n/a | n/a |
All data are cumulative. Core performance metrics that are required for reporting are in bold.
*CDC FoodCORE centers reported on Year Ten (2020) cumulative metrics in 2021. Performance measures where n<10 may be indicative of limitations in reporting due to restricted staff capacity as state and local health departments prioritized activities related to COVID-19 response efforts.
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Page last reviewed: October 8, 2021