What's the hantavirus risk in my ZIP?
Type a 5-digit US ZIP. We'll combine CDC cumulative case data, strain endemicity, and current outbreak activity into a single background-risk score with a stable share URL. Informational only — not a diagnosis.
We don't store your ZIP. The result page URL is what we use — share it freely.
How it works
Hantavirus risk in the US is concentrated in specific endemic regions. The Four Corners area (NM/AZ/CO/UT) is the historical Sin Nombre virus epicenter; Louisiana and Texas have recent Bayou virus activity; the wider deer-mouse range covers the Mountain West. The rest of the country sits at a low baseline. We turn that into a single score with a colour band and a one-line action.
FAQ
Is this a clinical risk assessment?
No. It's a public-health information tool that combines CDC cumulative case data, strain endemic ranges, and current outbreak activity to give an at-a-glance background-risk estimate. It is not a diagnosis and does not predict whether you specifically will be infected.
How is the score calculated?
We map your ZIP's first three digits to a US state, then add points for high cumulative HPS history, Four Corners (Sin Nombre) endemicity, and Bayou or wider deer-mouse range. The active WHO DON599 cruise cluster contributes a small global-traveler component. The score is capped at 90, leaving room for a local active outbreak.
What should I do with the result?
Read the prevention checklist, rodent-proof your home, and use the safe cleanup protocol if you encounter droppings or nesting. If you're traveling to an endemic area, take extra care in cabins and rural shelters.
Disclaimer. The risk score is a public-health communication tool, not a clinical assessment. It does not predict whether any individual will be infected. If you have symptoms or a confirmed exposure, contact a clinician or public-health authority.