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The following symptoms were reported in the 29 travel group members who met the case definition for the outbreak: diarrhea (27 [93.
Fecal specimens were collected from 6 ill persons who met the case definition.
Thirty-seven (54%) of the 68 patrons met the case definition of at least two of three symptoms (abdominal cramping, diarrhea, or vomiting) beginning within 48 hours after eating the buffet meal.
Among the remaining 126 Internet respondents, illness of 23 (18%) met the case definition, as did illness of 13 (18%) of 72 telephone interviewees.
The percentage of passengers whose reports met the case definition for acute gastroenteritis varied from 19% to 41%.
Of the 82 participants, 28 (3 hospitalized patients and 25 other villagers) had an illness that met the case definition (4 were suspected cases).
83% of base population) met the case definition for influenzalike illness.
Thus, including the death described above, we found 61 persons who met the case definition for neurocysticercosis; 43 (70%) of these were incident cases.
No significant differences were found between ill athletes who met the case definition and non-ill athletes by age, race, or gender.