CDC FoodCORE Year Twelve Cumulative Metrics Data – Norovirus, Other Etiology, and Unknown Etiology (NOU)
Data Report Period: January 1, 2022 to December 31, 2022
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) |
Norovirus Mean (Range) |
Other Etiology Mean (Range) |
Unknown Etiology Mean (Range) |
|---|---|---|---|
| 1a. Number of investigations | 87 (3–219) n=10 |
27 (4–86) n=10 |
20 (1–68) n=10 |
| 1b. Number of foodborne or point-source investigations | 11 (0–26) n=10 |
9 (0–16) n=10 |
4 (0–16) n=10 |
| 1c. Number of person-to-person investigations | 75 (1–201) n=10 |
10 (0–46) n=10 |
15 (0–57) n=10 |
| 2a.1 Number; Percent of investigations with clinical specimens submitted to any lab | 38 (3–95) 58% (16%–100%) n=9 |
19 (4–86) 83% (40%–100%) n=9 |
5 (0–16) 28% (0%–71%) n=9 |
| 2a.2 Number; Percent of investigations with clinical specimens submitted to PHL | 28 (2–89) 40% (5%–100%) n=10 |
14 (0–86) 53% (0%–100%) n=10 |
2 (0–10) 19% (0%–59%) n=10 |
| 2b. Number; Percent of investigations where clinical specimens were tested for GI viruses at PHL | 27 (1–89) 95% (50%–100%) n=10 |
3 (0–11) 34% (0%–100%) n=10 |
3 (0–10) 65% (0%–100%) n=10 |
| 2b.1 Number; Percent of investigations where specimens were tested for norovirus by RT-PCR at PHL | 26 (1–80) 93% (50%–100%) n=10 |
3 (0–11) 54% (0%–100%) n=9 |
2 (0–10) 61% (0%–100%) n=9 |
| 2b.1.1 Number; Percent of norovirus investigations with 2+ specimens confirmed positive for norovirus by conventional RT-PCR at the PHL where at least one specimen was sequenced and uploaded to CaliciNet | 17 (3–40) 77% (50%–100%) n=6 |
n/a | n/a |
| 2b.1.1.1 Median days from first norovirus detection via RT-PCR to upload to CaliciNet | 5 (2–8) n=6 |
n/a | n/a |
| 2b.2 Number; Percent of investigations where specimens were tested for other viruses at PHL | 7 (0–38) 38% (0%–100%) n=9 |
2 (0–11) 47% (0%–100%) n=9 |
1 (0–2) 47% (0%–100%) n=9 |
| 2c. Number; Percent of investigations where specimens were tested for pathogenic bacteria or their toxins, antigens, or antibodies at PHL | 10 (0–40) 49% (0%–100%) n=10 |
14 (1–81) 79% (22%–100%) n=10 |
2 (0–5) 50% (0%–100%) n=10 |
| 2c.1 Number; Percent of investigations where specimens were tested using culture-based diagnostics at PHL | 4 (0–25) 36% (0%–100%) n=9 |
12 (0–81) 67% (0%–100%) n=9 |
1 (0–5) 39% (0%–100%) n=9 |
| 2c.2 Number; Percent of investigations where clinical specimens were tested using non-culture-based diagnostics at PHL | 8 (0–38) 56% (0%–100%) n=9 |
1 (0–7) 18% (0%–88%) n=9 |
0 (0–2) 28% (0%–100%) n=9 |
| 2d. Number; Percent of investigations where clinical specimens were tested for parasites at PHL | 2 (0–12) 21% (0%–100%) n=10 |
2 (0–9) 19% (0%–82%) n=10 |
0 (0–2) 12% (0%–50%) n=10 |
| 3a. Number; Percent of foodborne or point-source investigations with exposure assessments conducted | 8 (0–25) 69% (0%–100%) n=10 |
6 (0–15) 60% (0%–100%) n=10 |
2 (0–4) 44% (0%–100%) n=10 |
| 3b. Number; Percent of foodborne or point-source investigations where an analytic epidemiologic study was conducted | 3 (0–16) 31% (0%–100%) n=10 |
3 (0–14) 28% (0%–100%) n=10 |
1 (0–3) 21% (0%–75%) n=10 |
| 4. Number; Percent of foodborne or point-source investigations with suspect vehicle/source identified | 3 (0–7) 24% (0%–63%) n=10 |
4 (0–8) 36% (0%–70%) n=10 |
1 (0–2) 20% (0%–100%) n=10 |
| 5. Number; Percent of foodborne or point-source investigations with confirmed vehicle/source identified | 1 (0–6) 15% (0%–50%) n=10 |
3 (0–9) 26% (0%–60%) n=10 |
0 (0–1) 10% (0%–50%) n=10 |
| 6. Number; Percent of foodborne or point-source investigations with identified source with: | |||
| a. Exclusion of ill person(s) | 3 (0–10) 21% (0%–53%) n=10 |
1 (0–3) 16% (0%–50%) n=10 |
0 (0–1) 3% (0%–25%) n=10 |
| b. Remediation or closure | 2 (0–9) 22% (0%–100%) n=10 |
3 (0–9) 25% (0%–60%) n=10 |
1 (0–3) 11% (0%–50%) n=10 |
| c. Educational campaign | 1 (0–4) 4% (0%–21%) n=10 |
0 (0–2) 6% (0%–22%) n=10 |
0 (0–1) 1% (0%–6%) n=10 |
| d. Media/public messaging | 0 (0–1) 1% (0%–4%) n=10 |
1 (0–9) 8% (0%–60%) n=10 |
0 (0–2) 8% (0%–50%) n=10 |
| e. Regulatory action (recall, hold) | 1 (0–6) 4% (0%–32%) n=10 |
0 (0–3) 4% (0%–33%) n=10 |
0 (0–1) 15% (0%–100%) n=10 |
| 7. Number; Percent of foodborne or point-source investigations linked to a common location where an on-site EHA was conducted | 8 (0–24) 69% (0%–100%) n=10 |
5 (0–14) 50% (0%–100%) n=10 |
2 (0–5) 53% (0%–100%) n=10 |
| 8. Number; Percent of foodborne or point-source investigations where food or environmental sample(s) were collected for testing | 1 (0–8) 5% (0%–31%) n=10 |
2 (0–10) 24% (0%–67%) n=10 |
0 (0–0) 0% (0%–0%) n=10 |
| 9. Number; Percent of foodborne or point-source investigations where environmental health partners were contacted | 9 (0–25) 77% (0%–100%) n=10 |
6 (0–14) 54% (0%–100%) n=10 |
2 (0–5) 66% (0%–100%) n=10 |
| 10. Number; Percent of outbreaks with NORS forms completed | 78 (0–219) 86% (0%–100%) n=10 |
12 (2–20) 83% (23%–100%) n=10 |
9 (0–49) 80% (0%–100%) n=10 |
All data are cumulative. Core performance metrics that are required for reporting are in bold.