Stadent\'s version-p. 2 0. (Table 3) item(s) at the deli bar causing the outbreak, investigators reanal and controls who ate at the deli bar during March 9-10. abled Gastroenteritis at a University in Texas Student\'s version-p. 17 PART VI-DESIGNING AN EPIDEMIOLOGIC STUDY TO REFINE THE HYPOTHESIS (STUDY #2) By March 13, one hundred and twenty- five persons with vomiting or diarthea had been reported to TDH. TDH invited staff fiom the Centers for Disease Control and Prevention (CDC) to participate in the ongoing investigation. CDC staff suggested submission of fresh stool specimens from ill students for viral studies including reverse transcriptase-polymerase chain reaction (RT-PCR). TDH and CDC staff decided to undertake an unmatched case-control study to further explore the source of the outbreak. Question 18 Who should be enrolled as subjects for this study? Solution persons with vomiting or diarrea that is the enroolled as subjects for this study.

1. Stadent's version-p. 2 0. (Table 3) item(s) at the deli bar causing the outbreak, investigators
reanal and controls who ate at the deli bar during March 9-10. abled Gastroenteritis at a
University in Texas Student's version-p. 17 PART VI-DESIGNING AN EPIDEMIOLOGIC
STUDY TO REFINE THE HYPOTHESIS (STUDY #2) By March 13, one hundred and twenty-
five persons with vomiting or diarthea had been reported to TDH. TDH invited staff fiom the
Centers for Disease Control and Prevention (CDC) to participate in the ongoing investigation.
CDC staff suggested submission of fresh stool specimens from ill students for viral studies
including reverse transcriptase-polymerase chain reaction (RT-PCR). TDH and CDC staff
decided to undertake an unmatched case-control study to further explore the source of the
outbreak. Question 18 Who should be enrolled as subjects for this study?
Solution
persons with vomiting or diarrea that is the enroolled as subjects for this study