e-SUS is a secure, easy-to-use app for creating vaccination records and reporting. It works in offline mode and can be used in all regions of Brazil, including the state of São Paulo.

It is developed to support the local health departments in their work to increase vaccination rates and ensure a better quality of life for the citizens. It is also designed to be used by private healthcare providers and public health services to help them to track the number of vaccines distributed to the population and to help them to report changes in the distribution of vaccines in the population.