Hantavirus in United States — 2026
Hantavirus in the United States — 2026 surveillance, live tracking
Overview
Live US hantavirus surveillance for 2026 is tracked daily on Hantapulse, aggregating CDC, state-health-department, and global news signals. The expected baseline for Sin Nombre virus hantavirus pulmonary syndrome is approximately 25–60 cases per year, concentrated in western and southwestern states — New Mexico, Colorado, Arizona, California, Washington, and Montana. Seoul virus surveillance remains at low background levels with periodic pet-rat-linked detections. See the live United States risk index and recent news feed for current activity.
United States baseline
Highest case counts in western and southwestern states (NM, CO, AZ, CA). Sin Nombre virus is the dominant strain.
Source: CDC Hantavirus Surveillance
Relevant strains
News from United States in 2026
New Mexico Department of Health: third hantavirus case of 2026
Yosemite National Park issues hantavirus warning after rodent activity uptick
Park rangers urge visitors to avoid contact with deer mice in cabins.
References & primary sources
Other years tracked for United States
Get alerted if United States escalates
Free email when the United States risk index moves to high or severe. No card required.
We don't sell your email. Unsubscribe anytime.
Read more: Live United States tracker · Hantavirus strains · Historical outbreaks · Prevention