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NoroSTAT Data Table

Suspected and Confirmed Norovirus Outbreaks Reported by State Health Departments in Minnesota, Ohio, Oregon, Tennessee, and Wisconsin to the National Outbreak Reporting System (NORS) by Week of Illness Onset, 2009-2014*.

Week Min Range 2009-12 2012-13 2013-14
1-Aug 2 1 4 4
8-Aug 0 2 7 3
15-Aug 0 4 2 3
22-Aug 0 3 5 3
29-Aug 1 3 3 5
5-Sep 1 2 2 1
12-Sep 1 2 7 2
19-Sep 1 3 6 1
26-Sep 1 5 4 3
3-Oct 1 3 3 3
10-Oct 1 6 2 4
17-Oct 1 6 8 5
24-Oct 1 7 12 7
31-Oct 6 5 13 4
7-Nov 2 15 17 9
14-Nov 5 5 12 7
21-Nov 3 16 20 21
28-Nov 7 15 26 18
5-Dec 6 27 29 27
12-Dec 9 17 17 15
19-Dec 4 20 27 21
26-Dec 13 20 30 25
2-Jan 7 26 22 18
9-Jan 8 22 33 27
16-Jan 15 11 23 17
23-Jan 18 11 37 23
30-Jan 10 24 35 22
6-Feb 11 14 19 30
13-Feb 11 24 31 33
20-Feb 8 14 30 33
27-Feb 8 21 30 35
6-Mar 11 7 25 31
13-Mar 4 8 15 29
20-Mar 4 7 18 38
27-Mar 3 8 25 27
3-Apr 6 2 23 24
10-Apr 3 9 11 19
17-Apr 4 4 12 15
24-Apr 2 8 6 6
1-May 6 3 9 10
8-May 2 11 12
15-May 2 4 7
22-May 1 4 5
29-May 2 1 6
5-Jun 1 2 2
12-Jun 3 1 3
19-Jun 1 2 3
26-Jun 2 4 4
3-Jul 3 4 3
10-Jul 1 4 3
17-Jul 0 4 2
24-Jul 0 2  

*Incomplete outbreak data from 2009-12 was supplemented with information from state health department records.

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