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Open Access Publications from the University of California

Incidence of medically-attended norovirus-associated acute gastroenteritis in four veteran's affairs medical center populations in the United States, 2011-2012

  • Author(s): Grytdal, SP
  • Rimland, D
  • Shirley, SH
  • Rodriguez-Barradas, MC
  • Goetz, MB
  • Brown, ST
  • Lucero-Obusan, C
  • Holodniy, M
  • Graber, C
  • Parashar, U
  • Vinjé, J
  • Lopman, B
  • et al.

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© 2015, Public Library of Science. All rights reserved. An estimated 179 million acute gastroenteritis (AGE) illnesses occur annually in the United States. The role of noroviruses in hospital-related AGE has not been well-documented in the U. S. We estimated the population incidence of community- acquired outpatient and inpatient norovirus AGE encounters, as well as hospital-acquired inpatient norovirus AGE among inpatients at four Veterans Affairs (VA) Medical Centers (VAMCs). Fifty (4%) of 1,160 stool specimens collected ≤7 days from symptom onset tested positive for norovirus. During a one year period, the estimated incidence of outpatient, community- and hospital-acquired inpatient norovirus AGE was 188 cases, 11 cases, and 54 cases/ 100,000 patients, respectively. This study demonstrates the incidence of outpatient and community- and hospital-acquired inpatient norovirus AGE among the VA population seeking care at these four VAMCs.

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