Crossref · Wavefront propagation in a hyperbolic model of hantavirus infection · 1s agoCrossref · Could bradykinin pathway inhibition change the course of severe hantavirus disease? · 1s agoCrossref · Outbreak at Sea: The MV Hondius Hantavirus Cluster as a Sentinel for Global Pandemic Readiness · 1s agoCrossref · Microbe snapshots: Hantavirus (Sin Nombre) · 1s agoCrossref · Hantavirus on the rise: clinical, virological, immunological, and public health perspectives · 1s agoCrossref · Pregnancy and hantavirus infection: maternal, fetal, and neonatal outcomes − a systematic review · 1s agoCrossref · Emerging threat of hantavirus infection: Public health challenges during an international cruise ship outbreak · 1s agoCrossref · “Hantavirus at sea: Why cruise ships must be ready for animal-borne disease.” · 1s agoCrossref · Wavefront propagation in a hyperbolic model of hantavirus infection · 1s agoCrossref · Could bradykinin pathway inhibition change the course of severe hantavirus disease? · 1s agoCrossref · Outbreak at Sea: The MV Hondius Hantavirus Cluster as a Sentinel for Global Pandemic Readiness · 1s agoCrossref · Microbe snapshots: Hantavirus (Sin Nombre) · 1s agoCrossref · Hantavirus on the rise: clinical, virological, immunological, and public health perspectives · 1s agoCrossref · Pregnancy and hantavirus infection: maternal, fetal, and neonatal outcomes − a systematic review · 1s agoCrossref · Emerging threat of hantavirus infection: Public health challenges during an international cruise ship outbreak · 1s agoCrossref · “Hantavirus at sea: Why cruise ships must be ready for animal-borne disease.” · 1s ago
COUnited StatesHPSSin Nombre

Hantavirus in Colorado.

Colorado averages 3–5 confirmed Sin Nombre virus HPS cases annually. Western-slope counties — La Plata, Montezuma, and Mesa — see the bulk of cases. Colorado Department of Public Health and Environment recommends rodent-proof storage and wet-cleanup protocols for backcountry users and ranchers.

YTD CASES (2026)
2
5-YEAR AVERAGE
3.8
DOMINANT STRAIN
Sin Nombre
ECOLOGY
Mountain valleys and the Western Slope agricultural belt; spring-summer peak.

Frequently asked

How many hantavirus cases has Colorado reported?

Colorado has reported 2 confirmed hantavirus pulmonary syndrome cases year-to-date in 2026, against a 5-year average of 3.8 per year. Case counts vary year-on-year with rodent population cycles.

What rodent carries hantavirus in Colorado?

Deer mouse (Peromyscus maniculatus). Mountain valleys and the Western Slope agricultural belt; spring-summer peak.

Which strain causes hantavirus in Colorado?

Sin Nombre virus is the dominant hantavirus strain in Colorado. It causes hantavirus pulmonary syndrome (HPS) with case fatality typically 30–40%.

Related

Disclaimer. State case counts reflect what CDC NNDSS publishes. The state health department is the authoritative real-time source.