Cases of Hantavirus by State (2026 Updates) | Box-Kat
Read original atvertexaisearch.cloud.google.com
San Diego County, California, United StatesConfidence 95%Jun 1, 2026
A Western harvest mouse in San Diego County, California, tested positive for hantavirus, marking the first reported rodent detection in the US for 2026 and serving as a reminder of hantavirus risk.
Species mentioned
- Western harvest mouse
Source articles
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- PrimaryCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-01
In January 2026, San Diego County, California, reported that a Western harvest mouse found near the Los Peñasquitos Ranch House tested positive for hantavirus. This marks the country's first positive rodent detection reported in 2026. While not a human case, this finding serves as a timely reminder that hantavirus risk begins with rodent activity. Hantavirus pulmonary syndrome (HPS) is a rare but often deadly respiratory illness transmitted through contact with infected rodents or their droppings, most often in the western United States.
- ReferenceSan Diego County Reports First Hantavirus Positive Mouse in 2026
box-kat.com · 2026-06-01
In January 2026, San Diego County reported that a Western harvest mouse found near the Los Peñasquitos Ranch House tested positive for hantavirus. This marks the country's first positive rodent detection reported in 2026. While not a human case, it serves as a timely reminder that hantavirus risk is linked to rodent activity. Health officials continue to emphasize prevention through rodent control.
- ReferenceHANTAVIRUS DETECTED NEAR ORANGE COUNTY LINE, BEST PEST URGES IMMEDIATE HOME INSPECTIONS - EIN Presswire
einpresswire.com · 2026-06-01
On January 16, 2026, San Diego County officials confirmed that a Western harvest mouse discovered near the Los Peñasquitos Ranch House tested positive for hantavirus, marking the first reported rodent detection of the year in California. A regional public health alert was issued on June 1, 2026, urging homeowners in Orange County and surrounding areas to take immediate action against rodent infestations, as seasonal conditions are expected to drive rodents indoors.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-02
In January 2026, San Diego County reported that a Western harvest mouse found near the Los Peñasquitos Ranch House tested positive for hantavirus. This was noted as the country's first positive rodent detection reported in 2026, serving as a reminder of hantavirus risk from rodent activity.
- ReferenceFirst Positive Hantavirus Mouse Reported in San Diego County, California in 2026
vertexaisearch.cloud.google.com · 2026-06-02
In January 2026, San Diego County, California, reported that a Western harvest mouse found near the Los Peñasquitos Ranch House tested positive for hantavirus. This was the country's first positive rodent detection reported in 2026, serving as a reminder of hantavirus risk associated with rodent activity. The report itself was published in May 2026.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-02
In January 2026, San Diego County, California, reported that a Western harvest mouse found near the Los Peñasquitos Ranch House tested positive for hantavirus. This was the first positive rodent detection reported in the U.S. for 2026, serving as a reminder of hantavirus risk from rodent activity.
- ReferenceHantavirus - County of San Diego
sandiegocounty.gov · 2026-06-02
The County of San Diego's Health and Human Services Agency reported that the first hantavirus-positive mouse of 2026 was found in the county. This discovery prompted public health officials to remind residents to take precautions against rodents, particularly when cleaning areas like sheds, garages, and other structures where mice may be present. The advisory emphasizes the importance of preventing exposure to rodent droppings and urine to avoid hantavirus infection.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
box-kat.com · 2026-06-02
Box-Kat reported on May 4, 2026, that San Diego County, California, identified the first hantavirus-positive mouse of 2026 in January near the Los Peñasquitos Ranch House. This serves as a reminder that hantavirus risk starts with rodent activity. Additionally, University of New Mexico researchers found over 30 small mammal species in the state, including ground squirrels and chipmunks, carry live hantavirus, indicating a broader range of potential carriers.
- ReferenceCases of Hantavirus by State (2026 Updates)
vertexaisearch.cloud.google.com · 2026-06-03
In January 2026, San Diego County, California, reported the first positive hantavirus mouse detection of the year, a Western harvest mouse found near Los Peñasquitos Ranch House. While not a human case, it serves as a reminder of hantavirus risk from rodent activity. According to CDC data, 864 hantavirus cases were reported in the US between 1993 and 2022, with most in western states like Arizona, New Mexico, Colorado, and Utah.
Reminder
This report is an aggregated summary of public information for surveillance and awareness purposes only. It is not medical advice. For symptoms, exposure, or clinical decisions, contact a qualified clinician or your local public-health authority.