About HantavirusMap

HantavirusMap combines three independent data layers:

• Endemic zones — regions where hantavirus is known to circulate based on long-term epidemiology.
• Historical cases — reported case counts per region. Circle size scales with the number of cases.
• Active alerts — recent outbreak signals from official health bulletins.

• CDC NNDSS — weekly hantavirus reports across US states.
• ECDC — annual surveillance for European countries.
• PAHO — Latin American case counts.
• WHO Disease Outbreak News (DON) — official outbreak bulletins.
• ProMED — community-curated outbreak reports.

Each item links back to its primary source. We prefer incomplete transparency over false precision: when data is sparse we show it explicitly rather than hiding it.

• Not a medical service or diagnosis tool.
• Not a confirmed real-time outbreak tracker.
• Not a substitute for official public health authorities.

• Public surveillance lags by days, weeks or months.
• Reporting coverage varies between countries.
• Endemic zone polygons follow national borders and don't reflect within-country variation.

• Additional diseases beyond hantavirus.
• Sub-national resolution where reporting allows.
• Trend indicators comparing recent activity to historical baselines.