CDC FoodCORE Year Nine Cumulative Metrics Data – Norovirus, Other Etiology, and Unknown Etiology (NOU)
Data Report Period: January 1, 2019 to December 31, 2019
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.* All data are cumulative.
| 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 | 109 (9–254) n=10 |
18 (2–40) n=10 |
24 (1–55) n=10 |
| 1b. Number of foodborne or point-source investigations | 14 (2–38) n=10 |
11 (2–20) n=10 |
5 (0–16) n=10 |
| 1c. Number of person-to-person investigations | 92 (4–237) n=10 |
6 (0–22) n=10 |
16 (0–38) n=10 |
| 2a.1 Number; Percent of investigations with clinical specimens submitted to any lab | 55 (9–144) 60% (21%–100%) n=10 |
14 (1–28) 77% (44%–100%) n=10 |
7 (1–18) 41% (9%–100%) n=10 |
| 2a.2 Number; Percent of investigations with clinical specimens submitted to PHL | 36 (7–93) 41% (10%–89%) n=10 |
8 (0–24) 42% (0%–77%) n=10 |
4 (1–16) 33% (4%–100%) n=10 |
| 2b. Number; Percent of investigations where clinical specimens were tested for GI viruses at PHL | 36 (7–93) 98% (79%–100%) n=10 |
3 (0–8) 31% (0%–75%) n=9 |
4 (0–16) 90% (0%–100%) n=10 |
| 2b.1 Number; Percent of investigations where specimens were tested for norovirus by RT-PCR at PHL | 35 (7–93) 100% (95%–100%) n=10 |
2 (0–7) 65% (0%–100%) n=9 |
4 (0–16) 85% (0%–100%) n=10 |
| 2b.1.1 Number; Percent of norovirus investigations with positive specimens sequenced and uploaded to CaliciNet | 36 (11–69) 86% (55%–100%) n=6 |
n/a | n/a |
| 2b.1.1.1 Median days from first norovirus detection via RT-PCR to upload to CaliciNet | 3 (2–4) n=6 |
n/a | n/a |
| 2b.2 Number; Percent of investigations where specimens were tested for other viruses at PHL | 9 (0–46) 25% (0%–100%) n=8 |
2 (0–6) 64% (0%–100%) n=8 |
1 (0–5) 41% (0%–100%) n=8 |
| 2c. Number; Percent of investigations where specimens were tested for pathogenic bacteria or their toxins, antigens, or antibodies at PHL | 14 (2–58) 49% (2%–100%) n=10 |
7 (1–15) 79% (25%–100%) n=9 |
2 (1–3) 80% (13%–100%) n=10 |
| 2c.1 Number; Percent of investigations where specimens were tested using culture-based diagnostics at PHL | 8 (0–38) 32% (0%–100%) n=8 |
5 (1–15) 73% (50%–100%) n=8 |
1 (0–2) 77% (0%–100%) n=8 |
| 2c.2 Number; Percent of investigations where clinical specimens were tested using non-culture-based diagnostics at PHL | 9 (0–47) 54% (0%–100%) n=8 |
3 (0–13) 26% (0%–87%) n=8 |
1 (0–2) 59% (0%–100%) n=8 |
| 2d. Number; Percent of investigations where clinical specimens were tested for parasites at PHL | 2 (0–8) 20% (0%–100%) n=9 |
3 (0–12) 25% (0%–75%) n=9 |
1 (0–2) 32% (0%–100%) n=9 |
| 3a. Number; Percent of foodborne or point-source investigations with exposure assessments conducted | 10 (1–28) 75% (29%–100%) n=10 |
7 (2–20) 73% (33%–100%) n=10 |
3 (0–9) 67% (0%–100%) n=10 |
| 3b. Number; Percent of foodborne or point-source investigations where an analytic epidemiologic study was conducted | 7 (0–19) 44% (0%–100%) n=10 |
3 (0–11) 19% (0%–64%) n=10 |
1 (0–4) 25% (0%–100%) n=10 |
| 4. Number; Percent of foodborne or point-source investigations with suspect vehicle/source identified | 3 (0–11) 28% (0%–67%) n=10 |
3 (1–8) 40% (5%–100%) n=10 |
1 (0–3) 16% (0%–100%) n=10 |
| 5. Number; Percent of foodborne or point-source investigations with confirmed vehicle/source identified | 1 (0–4) 5% (0%–15%) n=10 |
4 (1–7) 38% (13%–64%) n=10 |
0 (0–1) 3% (0%–33%) n=10 |
| 6. Number; Percent of foodborne or point-source investigations with identified source with: | |||
| a. Exclusion of ill person(s) | 4 (0–13) 25% (0%–76%) n=9 |
2 (0–6) 10% (0%–30%) n=9 |
0 (0–1) 1% (0%–10%) n=9 |
| b. Remediation or closure | 3 (0–13) 19% (0%–50%) n=9 |
2 (0–5) 13% (0%–38%) n=9 |
1 (0–2) 8% (0%–50%) n=9 |
| c. Educational campaign | 0 (0–2) 2% (0%–6%) n=9 |
1 (0–3) 9% (0%–29%) n=9 |
0 (0–1) 1% (0%–10%) n=9 |
| d. Media/public messaging | 0 (0–2) 1% (0%–12%) n=9 |
1 (0–5) 8% (0%–38%) n=9 |
0 (0–1) 11% (0%–100%) n=9 |
| e. Regulatory action (recall, hold) | 0 (0–1) 1% (0%–6%) n=9 |
1 (0–3) 7% (0%–29%) n=9 |
0 (0–0) 0% (0%–0%) n=9 |
| 7. Number; Percent of foodborne or point-source investigations linked to a common location where an on-site EHA was conducted | 11 (2–26) 85% (67%–100%) n=10 |
5 (0–10) 53% (0%–100%) n=10 |
3 (0–9) 65% (0%–100%) n=10 |
| 8. Number; Percent of foodborne or point-source investigations where food or environmental sample(s) were collected for testing | 1 (0–6) 8% (0%–50%) n=9 |
2 (0–6) 21% (0%–50%) n=9 |
0 (0–1) 12% (0%–100%) n=9 |
| 9. Number; Percent of foodborne or point-source investigations where environmental health partners were contacted | 12 (0–29) 76% (0%–100%) n=9 |
6 (2–12) 61% (15%–100%) n=9 |
4 (0–9) 80% (0%–100%) n=9 |
| 10. Number; Percent of outbreaks with NORS forms completed | 95 (5–254) 88% (28%–100%) n=10 |
14 (2–33) 85% (33%–100%) n=10 |
16 (1–47) 80% (4%–100%) n=10 |
*CDC FoodCORE centers reported on Year Nine (2019) cumulative metrics in 2020. 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: January 14, 2021