Sources & methodology

Methodology

Only cases reported by an official health authority (WHO, PAHO, ECDC, CDC, Africa CDC, and national ministries of health) are counted in the confirmed totals. Press-only mentions are displayed separately as «press mentions» and clearly flagged as unconfirmed until validated by a health authority. Each case is counted once even if it appears in multiple bulletins; deduplication is performed by country, epidemiological week of notification, and age range or initials when available.

• Inclusion: only confirmed cases published by an official health authority.
• Exclusion: unvalidated suspected cases, ruled-out cases, or reports appearing only in the press without official confirmation.
• Deduplication: each case is identified by country + epidemiological week + age range or initials (when available).
• Updates: weekly review or whenever a relevant authority publishes a bulletin.
• Corrections: spotted an error? Email contact@hantavirusinfo.online with the official source.