How many hantavirus cases worldwide in 2026?

As of the most recent ingestion, hantavirusmap.io has tracked 103 confirmed cases across 2 distinct outbreak clusters in 2026, with 3 reported deaths.

The figure is a lower bound: it reflects events officially reported by tier-1 sources (WHO Disease Outbreak News, CDC NNDSS / MMWR, ECDC, PAHO, and national health ministries) plus tier-2 confirmations from ProMED-mail and CIDRAP. Hantavirus surveillance is patchy — many countries do not publish granular time-stamped case data, and rural cases frequently go undiagnosed because the early prodrome resembles influenza.

Geographic distribution in 2026 follows the long-running pattern: Andes virus (ANDV) clusters in Argentina and Chile, Sin Nombre virus (SNV) sporadic cases across the western United States, Hantaan and Seoul virus reports from the Korean peninsula and northeast China, and Puumala virus from Fennoscandia. Notable in 2026 was the MV Hondius cruise-ship outbreak — the first documented ship-borne hantavirus cluster.

For real-time totals, the live map breaks the count down by pathogen, country, syndrome (HPS vs HFRS) and confidence tier.