THE SOURCE DIRECTORY

Go straight
to the evidence.

Directory reviewed October 5, 2026

Read the original references behind the map and explainers. Each map entry also links directly to its own source.

Public health references

• World Health Organization: Plague fact sheet. Disease overview and clinical forms.
• CDC: About plague. Transmission, geographic context, and treatment.
• CDC plague information hub. Public and clinical resources.

October 2026 Russia reporting

• Euronews, October 4. Initial incident reporting and attributed official response.
• CBS News, October 5. Follow-up reporting.
• Axios, October 4. U.S. monitoring of the reports.

News reports are evidence of what was reported. They do not, by themselves, establish a laboratory diagnosis. Read the situation brief for our current classification.

Map attribution

The interactive map uses Leaflet and Esri World Street Map tiles. Tile contributors are listed on the map. Basemap boundaries and labels do not express a political position or indicate disease risk.