A Multi-Site Clinical Evaluation of the ARIES Norovirus Assay

Inclusion Criteria: * The specimen is from a patient with symptoms of acute gastroenteritis. * The specimen is from a male or female subject who was either hospitalized, admitted to a hospital emergency department or visiting an outpatient clinic. * The subject's specimen is an unpreserved, unformed (liquid or soft) stool submitted for testing at the site. Exclusion Criteria: * The specimen is from an individual with known and documented non-infectious conditions such as ulcerative colitis, irritable bowel syndrome and/or Crohn's disease * The specimen was not properly collected, transported, processed or stored according to the instructions provided by the sponsor.