Table A1.

Outline of the semi-structured interviews. Note that not all the questions were posed to all the participants, as the interviews have been adjusted depending on the different roles of the interviewee in the surveillance system.

Outline of the Semi-Structured Interviews
How does the dengue surveillance system work? What are the existing national policies on dengue surveillance? How does data collection for dengue surveillance work?
In addition to passive surveillance, are there forms of active dengue surveillance? If so, what types of active surveillance are there and how do they work?
How does laboratory surveillance work?
How are data integrated at the municipal, state, and federal levels?
How are epidemiological and environmental data integrated? Are there any systems in place to integrate other types of data (for example: socioeconomic data, urban environment, weather)?
What is the role of the private health system in dengue surveillance?
What are the response activities based on dengue surveillance?
What are the strengths and weaknesses of the dengue surveillance system?
What are the reasons for the low sensitivity of the surveillance system?
Do you have any suggestions for improving the dengue surveillance system?