Diarrheal disease surveillance. A system for diarrheal disease
surveillance was established as part of weekly household
interviews. Local members of the community were hired and
trained to deliver the cross-sectional and weekly interviews.
Native Spanish-speakers translated the English questionnaires,
and they were back-translated to ensure accurate translation
and interpretation of the questions. In addition, interviewers
tested the questionnaires in the surrounding community
before beginning the survey. All interviews were conducted at
the participant’s house.