1. Reproducibility: Sharing code ensures that research findings can be independently verified by other scientists. This is crucial for maintaining the integrity and credibility of scientific research. 2. Efficiency: Researchers can save time and resources by reusing existing code instead of writing new code from scratch. This allows them to focus on innovative aspects of their research. 3. Collaboration: Open code fosters collaboration among researchers from different disciplines and geographical locations, enabling a more comprehensive approach to solving complex epidemiological problems. 4. Transparency: Shared code provides transparency in the methods used for data analysis, leading to increased trust in the results.