Volume 19, Number 8—August 2013
Dispatch
Norovirus Surveillance among Callers to Foodborne Illness Complaint Hotline, Minnesota, USA, 2011–2013
Amy A. Saupe
, Dawn Kaehler, Elizabeth A. Cebelinski, Brian Nefzger, Aron J. Hall, and Kirk E. Smith
, Dawn Kaehler, Elizabeth A. Cebelinski, Brian Nefzger, Aron J. Hall, and Kirk E. Smith
Table 2
Results for testing of stool samples submitted by callers to foodborne illness hotline, by month of complainant illness onset, Minnesota, October 2011–January 2013
| Year and month | Total no. complainants | No. (%) eligible to submit sample* | No. (%) tested | No. (%) positive for |
||
|---|---|---|---|---|---|---|
| Any norovirus | Norovirus genogroup I† | Norovirus genogroup II† | ||||
| 2011 | ||||||
| Oct | 48 | 28 (58.3) | 12 (42.9) | 5 (41.7) | 1 (20.0) | 4 (80.0) |
| Nov | 52 | 37 (71.2) | 19 (51.4) | 13 (68.4) | 1 (7.7) | 12 (92.3) |
| Dec |
117 |
70 (59.8) |
28 (40.0) |
17 (60.7) |
4 (23.5) |
13 (76.5) |
| 2012 | ||||||
| Jan | 96 | 62 (64.6) | 24 (38.7) | 19 (79.2) | 2 (10.5) | 17 (89.5) |
| Feb‡ | 67 | 46 (68.7) | 21 (45.7) | 15 (71.4) | 2 (13.3) | 12 (80.0) |
| Mar | 79 | 40 (50.6) | 16 (40.0) | 10 (62.5) | 2 (20.0) | 8 (80.0) |
| Apr | 57 | 34 (59.6) | 20 (58.8) | 6 (30.0) | 1 (16.7) | 5 (83.3) |
| May | 54 | 38 (70.4) | 13 (34.2) | 3 (23.1) | 1 (33.3) | 2 (66.7) |
| Jun | 51 | 29 (56.9) | 8 (27.6) | 2 (25.0) | 2 (100.0) | 0 |
| Jul | 54 | 26 (48.1) | 11 (42.3) | 3 (27.3) | 3 (100.0) | 0 |
| Aug | 62 | 35 (56.5) | 10 (28.6) | 3 (30.0) | 0 | 3 (100.0) |
| Sep | 46 | 30 (65.2) | 7 (23.3) | 2 (28.6) | 0 | 2 (100.0) |
| Oct | 80 | 47 (58.8) | 17 (36.2) | 8 (47.1) | 1 (12.5) | 7 (87.5) |
| Nov | 79 | 46 (58.2) | 11 (23.9) | 5 (45.5) | 2 (40.0) | 3 (60.0) |
| Dec |
76 |
44 (57.9) |
16 (36.4) |
13 (81.3) |
0 |
13 (100.0) |
| 2013 Jan |
42 |
21 (50.0) |
8 (38.1) |
3 (37.5) |
0 |
3 (100.0) |
| Total | 1,060 | 633 (59.7) | 241 (38.1) | 127 (52.7) | 22 (17.3) | 104 (81.9) |
*All samples tested at Minnesota Department of Health (MDH) Public Health Laboratory. Eligibility criteria: Minnesota residency, symptom eligibility (>3 loose stools in 24 h or vomiting), complaint received <4 d after vomiting/diarrhea onset or <2 d after vomiting/diarrhea recovery, and complainant interviewed by MDH staff. Completed complaints forwarded to MDH by local jurisdictions were excluded.
†Of those positive for norovirus.
‡One February complainant was positive for genogroups (not included in individual genogroup totals).
Page created: July 19, 2013
Page updated: July 19, 2013
Page reviewed: July 19, 2013
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