Geographic
What U.S. states report Hantavirus most often?
90-Second Answer
Last updated June 24, 2026
Short answer
CDC’s public case data shows U.S. Hantavirus cases by state and notes that most reported infections have occurred west of the Mississippi River.
What it means
CDC says surveillance began after a 1993 outbreak in the Four Corners region, where Arizona, Colorado, New Mexico, and Utah meet. The public CDC page provides state-level data, not county-level data.
What to know
State totals are historical surveillance data, not a live risk map. Local exposure depends on rodent activity, environment, and behavior.
When to check official guidance
Check CDC’s case data page and your state health department for state-specific context.
Sources
Hantavirus Now summarizes external public health information in plain language. Source links open in a new tab.