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Volume 18, Number 5—May 2012

Dispatch

Sapovirus Outbreaks in Long-Term Care Facilities, Oregon and Minnesota, USA, 2002–2009

Lore E. LeeComments to Author , Elizabeth A. Cebelinski, Candace Fuller, William E. Keene, Kirk Smith, Jan Vinjé, and John M. Besser
Author affiliations: Oregon Public Health Division, Portland, Oregon, USA (L.E. Lee, W.E. Keene); Minnesota Department of Health, St. Paul, Minnesota, USA (E.A. Cebelinski, C. Fuller, K. Smith); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (J. Vinjé, J.M. Besser)

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Table 2

Descriptive epidemiology of 21 sapovirus outbreaks, Oregon and Minnesota, USA 2002–2009*

Infection and state Outbreak no. Setting Transmission Outbreak features
No. cases‡ Symptoms, no. patients
Date No. days† Vomiting§ Diarrhea§ Fever¶
Sapovirus only
MN 2002–438 Grade school Person-to-person 2002 Apr 11 15 NA NA NA
MN 2002–439 Long-term care Person-to-person 2002 Apr 1 34 NA NA NA
MN 2003–644 Grade school Person-to-person 2003 Dec 8 17 NA NA NA
OR 2004–066 Long-term care Person-to-person 2003 Mar 17 44 23 44 8
MN 2006–924 Long-term care Person-to-person 2006 Feb 13 24 9 24 11
OR 2007–013 Long-term care Person-to-person 2007 Jan 15 12 7 9 NA
OR 2007–023 Long-term care Person-to-person 2007 Jan 7 35 16 33 3
OR 2007–028 Long-term care Person-to-person 2007 Jan 9 12 7 5 6
OR 2007–039 Long-term care Person-to-person 2007 Jan 22 14 8 12 2
OR 2007–046 Long-term care Person-to-person 2007 Jan 5 15 11 15 0
OR 2007–086 Long-term care Person-to-person 2007 Feb 13 8 6 7 NA
OR 2007–228 Long-term care Person-to-person 2007 Nov 10 34 14 27 NA
OR 2008–109 Long-term care Person-to-person 2008 Apr 28 24 10 21 NA
MN 2008–1308 Cruise ship Foodborne suspected 2008 Aug 1 5 3 5 NA
MN 2008–1327 Bed and breakfast Foodborne suspected 2008 Nov 3 7 2 7 2
OR 2009–146 Psychiatric hospital Person-to-person 2009 Jul 9 13 9 11 NA
OR 2009–167 Long-term care Person-to-person 2009 Aug 11 22 7 18 NA
Sapovirus and norovirus
OR 2007–001 Prison Person-to-person 2006 Dec 23 154 70 119 1
OR 2007–221 Long-term care Person-to-person 2007 Nov 16 34 8 29 NA
Sapovirus and adenovirus
OR 2007–091 Long-term care Person-to-person 2007 Feb 13 25 15 25 NA
OR 2008–128 Restaurant Foodborne suspected 2008 Apr 4 26 10 25 NA

*MN, Minnesota; OR, Oregon; NA, data were not collected or could not be analyzed.
†Median no. days: 15 (range 1–28 days).
‡Laboratory-confirmed and epilinked cases with systematically collected symptoms; these are not complete case counts. Median no. cases: 34 (range 5–44 cases).
§Of 269 patients, vomiting was reported for 132 (49%) and diarrhea for 238 (88%).
¶Of 141 patients, fever was reported for 32 (23%).

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