Data is collected from a variety of sources, including:
- _National Health Agencies_: Organizations like the CDC in the United States and similar bodies in other countries play a pivotal role in data collection. - _International Organizations_: Bodies such as the WHO and the World Bank aggregate and share data from multiple countries. - _Healthcare Providers_: Hospitals, clinics, and other healthcare facilities contribute valuable patient data. - _Surveys and Research Studies_: Large-scale epidemiological studies and surveys provide in-depth data on specific health issues.
