CDC FoodCORE Year Eight Cumulative Metrics – Norovirus, Other Etiology, and Unknown Etiology (NOU)

Data Report Period: January 1, 2018 to December 31, 2018

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.

Table showing the Mean (Range) for Norovirus, other etiology, and unknown etiology
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 101 (5–245)
n=10
22 (6–48)
n=10
17 (2–39)
n=10
1b. Number of foodborne or point-source investigations 14 (3–40)
n=10
14 (3–28)
n=10
4 (1–18)
n=10
1c. Number of person-to-person investigations 83 (2–225)
n=10
8 (0–25)
n=10
10 (0–36)
n=10
2a.1 Number; Percent of investigations with clinical specimens submitted to any lab 59 (5–159)
65% (18%–100%)
n=10
18 (4–44)
86% (13%–100%)
n=10
11 (0–27)
53% (0%–76%)
n=9
2a.2 Number; Percent of investigations with clinical specimens submitted to PHL 37 (3–87)

49% (6%–100%)
n=10

14 (3–35)

66% (10%–100%)
n=10

5 (0–14)

37% (0%–75%)
n=9

2b. Number; Percent of investigations where clinical specimens were tested for GI viruses at PHL 37 (3–87)

91% (14%–100%)
n=10

5 (0–12)

45% (0%–100%)
n=10

6 (1–14)

76% (33%–100%)
n=7

2b.1 Number; Percent of investigations where specimens were tested for norovirus by RT-PCR at PHL 40 (3–87)

99% (95%–100%)
n=9

4 (0–9)

64% (0%–100%)
n=9

6 (1–14)

86% (33%–100%)
n=7

2b.1.1 Number; Percent of norovirus investigations with positive specimens sequenced and uploaded to CaliciNet 29 (1–58)

70% (33%–100%)
n=7

n/a n/a
2b.1.1.1 Median days from first norovirus detection via RT-PCR to upload to CaliciNet 5 (2–10)
n=7
n/a n/a
2b.2 Number; Percent of investigations where specimens were tested for other viruses at PHL 7 (0–27)

22% (0%–100%)
n=9

4 (0–10)

78% (0%–100%)
n=9

4 (0–13)

54% (0%–100%)
n=6

2c. Number; Percent of investigations where specimens were tested for pathogenic bacteria or their toxins, antigens, or antibodies at PHL 13 (2–47)

52% (2%–100%)
n=10

9 (0–26)

73% (0%–100%)
n=10

4 (0–8)

60% (0%–100%)
n=7

2c.1 Number; Percent of investigations where specimens were tested using culture-based diagnostics at PHL 9 (0–47)

55% (0%–100%)
n=10

7 (0–26)

57% (0%–100%)
n=10

2 (0–8)

56% (0%–100%)
n=7

2c.2 Number; Percent of investigations where clinical specimens were tested using non-culture-based diagnostics at PHL 11 (0–47)

52% (0%–100%)
n=9

4 (0–15)

56% (0%–100%)
n=9

1 (0–5)

37% (0%–100%)
n=6

2d. Number; Percent of investigations where clinical specimens were tested for parasites at PHL 3 (0–14)

15% (0%–100%)
n=10

5 (0–17)

44% (0%–100%)
n=10

1 (0–5)

11% (0%–45%)
n=7

3a. Number; Percent of foodborne or point-source investigations with exposure assessments conducted 10 (2–40)

77% (30%–100%)
n=10

10 (2–23)

74% (26%–100%)
n=10

2 (0–7)

72% (0%–100%)
n=10

3b. Number; Percent of foodborne or point-source investigations where an analytic epidemiologic study was conducted 5 (0–22)

29% (0%–90%)
n=10

3 (0–7)

26% (0%–75%)
n=10

1 (0–7)

33% (0%–100%)
n=10

4. Number; Percent of foodborne or point-source investigations with suspect vehicle/source identified 2 (0–6)

16% (0%–33%)
n=10

5 (1–14)

39% (8%–75%)
n=10

1 (0–2)

16% (0%–50%)
n=10

5. Number; Percent of foodborne or point-source investigations with confirmed vehicle/source identified 3 (0–13)

14% (0%–50%)
n=10

4 (0–12)

24% (0%–55%)
n=10

0 (0–1)

5% (0%–33%)
n=10

6. Number; Percent of foodborne or point-source investigations with identified source with:
a. Exclusion of ill person(s) 5 (0–22)

33% (0%–80%)
n=9

2 (0–5)

11% (0%–25%)
n=9

0 (0–1)

4% (0%–33%)
n=9

b. Remediation or closure 4 (0–27)

19% (0%–68%)
n=9

3 (0–10)

13% (0%–45%)
n=9

1 (0–4)

11% (0%–50%)
n=9

c. Educational campaign 1 (0–5)

16% (0%–75%)
n=9

4 (0–17)

25% (0%–61%)
n=9

0 (0–1)

4% (0%–33%)
n=9

d. Media/public messaging 1 (0–2)

4% (0%–20%)
n=9

2 (0–4)

11% (0%–25%)
n=9

0 (0–0)

0% (0%–0%)
n=9

e. Regulatory action (recall, hold) 0 (0–2)

2% (0%–20%)
n=9

1 (0–2)

6% (0%–25%)
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 12 (2–38)

79% (60%–100%)
n=10

9 (1–23)

67% (25%–100%)
n=10

3 (1–10)

89% (33%–100%)
n=10

8. Number; Percent of foodborne or point-source investigations where food or environmental sample(s) were collected for testing 1 (0–4)

3% (0%–15%)
n=10

2 (0–6)

23% (0%–75%)
n=10

1 (0–6)

22% (0%–100%)
n=10

9. Number; Percent of foodborne or point-source investigations where environmental health partners were contacted 12 (2–38)

82% (60%–100%)
n=9

11 (3–25)

80% (33%–100%)
n=9

4 (1–13)

97% (72%–100%)
n=9

10. Number; Percent of outbreaks with NORS forms completed 77 (2–245)

94% (40%–100%)
n=10

19 (4–43)

89% (14%–100%)
n=10

15 (2–37)

92% (41%–100%)
n=10