Editorial Policy

For outbreak facts, official public-health updates come first: WHO, ECDC, CDC, national health agencies, and direct government communications.

News reports are used only when they clarify publicly reported route details, logistics, or statements that are already consistent with official sources.

When sources differ, the site uses the latest official source by publication date and labels case status clearly: confirmed, probable, inconclusive, suspected, or death. Historical timeline entries keep the wording and counts from the source available at that date.

Symptom, transmission, treatment, and prevention pages summarize official clinical guidance from health agencies. They are written for public understanding and should not be used to diagnose or treat a person.

Factual errors are corrected as soon as they are identified. See the corrections page for the current correction workflow.