The content of the tool has been updated to reflect new WHO technical guidance and new evidence on both COVID-19 pandemic and mass gatherings, as well as feedback from end-users. This revision of the risk assessment tool was developed and reviewed by the WHO Mass Gathering Technical Expert Group with input from WHO area-specific technical teams. The expanded tool includes eight tabs: 1. Instructions; 2. Assessment Overview; 3. Decision Tree; 4. Risk Evaluation; 5. Risk Mitigation; 6. Decision Matrix; 7. Risk Communication; and 8. Reviewer Sign Off. There as an additional tab with a glossary and list of abbreviations.