Where hantavirus is reported

United States hantavirus map and source context

This page gives reviewed map context for United States. It is a source-linked public health summary, not a live case counter or local risk predictor.

Open tracker Review methodology

Answer-ready summary

What this United States map page says

This United States page is a reviewed, source-linked hantavirus map summary. It can be cited for public health context, source limitations, and geography precision, but it is not a live outbreak feed, patient-location dataset, or local risk score.

Suggested citation: Hantavirus Maps, “United States hantavirus map and source context,” updated May 19, 2026, https://hantavirusmaps.org/where/united-states.

Official historical surveillance summary

CDC state-level historical summary through 2023

CDC reports 890 laboratory-confirmed hantavirus disease cases in the United States from the start of surveillance in 1993 through the end of 2023. CDC states public data are reported by state only and county-level data cannot be provided to protect identities.

Period: 1993-2023
Reported cases: 890
Geography: State only

How to interpret this page

What the United States marker means

It is a reviewed public summary or official source link for map context.

It is not a statement that current exposure risk exists at any exact address, county, park, workplace, or travel stop.

For current public health action, use the linked official agency sources and local health authorities.

Limits

Known limitations

Not a real-time tracker.
County-level data are not published here.
Counts may differ from provisional weekly NNDSS tables.

Official alerts

Related reviewed alerts

Washington State Department of Health · 2026-05-15

Washington separates MV Hondius Andes exposure monitoring from unrelated Sin Nombre event

Washington DOH said it was assisting with two separate hantavirus-related investigations: three King County residents potentially exposed to Andes virus linked to the MV Hondius event, and a separate unrelated local hantavirus infection. DOH emphasized that the virus strains and exposure circumstances were different and not connected, and that public risk remained very low.

State response update only. Andes virus exposure monitoring and routine Sin Nombre virus risk must remain separated; this is not a Washington live case feed, patient-location dataset, or evidence of local Andes virus spread.

Minnesota Department of Health · 2026-05-12

Minnesota monitoring statement for potential MV Hondius exposure

Minnesota Department of Health said it was monitoring one asymptomatic person in Minnesota who may have briefly been exposed overseas to someone from the MV Hondius cruise who tested positive for Andes virus, and emphasized that the health risk to the public remained very low.

Monitoring statement only. It does not indicate a confirmed Minnesota case, local transmission, or increased public risk in Minnesota.

California Department of Public Health · 2026-05-08

California monitoring passengers linked to MV Hondius Andes virus exposure

CDPH said it was coordinating with federal and local health partners after notification that California residents were aboard the MV Hondius. CDPH described daily symptom monitoring for a returned passenger and noted that at least one other California resident remained aboard the ship, while public risk in California was extremely low.

Passenger-response update only. It does not indicate California community transmission, patient locations, or a general local risk increase.

Oregon Health Authority · 2026-05-08

Oregon clinician alert for possible MV Hondius Andes virus exposures

Oregon Health Authority issued a clinician alert on Andes virus in patients returning from the MV Hondius cruise event. The alert said no exposed individuals had returned to Oregon at that time and that any exposed individuals returning to Oregon would be actively monitored for symptoms through 42 days after last exposure.

Clinician/public-health readiness notice only. It is not an Oregon case report, local transmission marker, or live public risk feed.

Utah Department of Health and Human Services · 2026-05

Utah resident passenger linked to MV Hondius response

Utah DHHS stated at least one Utah resident was a passenger on the MV Hondius and said this did not increase hantavirus risk to the Utah population while state and federal officials coordinated monitoring.

Passenger-response notice only. It does not indicate local spread in Utah or a general Utah risk map.

Source transparency

Reviewed Sources

Links open official public health or agency-published source material used for the summaries on this page.

Centers for Disease Control and Prevention

Reported Cases of Hantavirus Disease

U.S. historical case context and the state-only geography limitation.

CDC states public case data are reported by state only and county-level data cannot be provided publicly.

Centers for Disease Control and Prevention

Hantavirus Case Definition and Reporting

Explains national notifiable condition reporting and surveillance definitions.

Surveillance case definitions are for public health classification and are not clinical diagnostic guidance for individual patients.