The primary objective of the study is to evaluate the effectiveness of additional risk minimization measures material by assessing the knowledge and understanding of healthcare professionals regarding the key safety messages provided in the material.

The secondary objective of the study is to evaluate if healthcare professionals know Dengvaxia product information, namely, age indication and contraindications.

The study is a cross-sectional Survey. Study data are collected through a questionnaire.

Inclusion criteria:

- Healthcare professionals who are current or past prescribers of Dengvaxia

Exclusion criteria:

• Healthcare professionals who have never prescribed Dengvaxia
• Healthcare professionals who may have a conflict of interest with the survey (i.e. Healthcare professionals employed by regulatory bodies, pharmaceutical industries)
• Healthcare professionales who have participated in testing the questionnaire for comprehensibility, consistency and the appropriateness of medical terms

The above information is not intended to contain all considerations relevant to participation in the survey.

Healthcare professionals who are current or past prescribers of Dengvaxia

Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org