Figure 1.

Flow diagram of subject participation in the study, including eligibility assessment, enrollment, specimen collection, testing for norovirus, and final determination of norovirus status. A, Process of acute gastroenteritis (AGE) case inclusion. B, Process of control inclusion. In each panel, the left-hand column of boxes indicates subjects included at each study step; the right-hand column of boxes details the subjects excluded from each study step and the primary reasons for exclusion.