In Honduras, health systems have been faced with a duty and a need to establish surveillance mechanisms in order to understand the pathways of health and disease in the population. The objective of this article is to describe the process of analysis and the strategies used during development of a robust information system for vaccine safety surveillance, which can also be replicated for other forms of surveillance. For this purpose, agile development methods and open-source tools were used to design and develop a baseline monitoring system, incorporating recognized standards for information coding, validation, and verification. This successful implementation of a reliable, stable, and scalable information system that will be used for the surveillance of events supposedly attributable to vaccination and immunization (ESAVI) and adverse events of special interest (AESI) should allow the timely and agile capture of surveillance data and facilitate data analysis.
