Reported Cases of Hantavirus Disease - CDC
Utah, United StatesConfidence 95%890 affectedJun 1, 2026
The CDC provides an overview of hantavirus disease in the United States, reporting 890 cases since 1993 and discussing surveillance efforts and the historical 1993 Four Corners outbreak.
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- PrimaryReported Cases of Hantavirus Disease - CDC
cdc.gov · 2026-06-01
The CDC provides an overview of hantavirus disease in the United States, reporting 890 cases since surveillance began in 1993, as of the end of 2023. Hantavirus Pulmonary Syndrome (HPS) became a nationally notifiable disease in 1995. The initial surveillance efforts in 1993 were prompted by an outbreak of severe respiratory illness in the Four Corners region, encompassing Arizona, Colorado, New Mexico, and Utah. The CDC notes that county-level data is not publicly provided to protect patient identities.
- ReferenceReported Cases of Hantavirus Disease - CDC
vertexaisearch.cloud.google.com · 2026-06-01
As of the end of 2023, 890 cases of hantavirus disease were reported in the United States since surveillance began in 1993, with a 34% mortality rate. Most cases (94%) occur west of the Mississippi River, particularly in the Four Corners region (Arizona, Colorado, New Mexico, Utah). The Sin Nombre virus is the predominant strain in the US. This CDC page provides historical data up to 2023 and does not report new cases for 2026 within the 90-day window, but rather general surveillance information updated April 23, 2026.
- ReferenceHantavirus explained: What to know after the cruise ship outbreak - Harvard Health
health.harvard.edu · 2026-06-02
Harvard Health published an explainer on May 6, 2026, on hantavirus following the cruise ship outbreak. It details early symptoms such as fatigue, fever, and muscle aches, which can progress to severe respiratory issues as lungs fill with fluid. The article also touches on the virus's history in the US, first recognized in 1993 during an outbreak in the Four Corners region (Arizona, Colorado, New Mexico, and Utah).
- ReferenceReported Cases of Hantavirus Disease
cdc.gov · 2026-06-02
As of the end of 2023, the CDC reported 890 laboratory-confirmed cases of hantavirus disease in the United States since surveillance began in 1993. These cases included Hantavirus Pulmonary Syndrome (HPS) and non-pulmonary hantavirus infection. The data is reported by state only to protect patient identities. The majority (94%) of cases occurred west of the Mississippi River, with the Four Corners region (Arizona, Colorado, New Mexico, Utah) being a primary area of concentration where surveillance began during an outbreak in 1993. The median age of confirmed case patients was 38 years, and 35
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-02
Hantavirus Pulmonary Syndrome (HPS) cases continue to surface in the U.S., primarily in the western states, especially the Four Corners region (New Mexico, Colorado, Arizona, Utah). Between 1993 and 2022, 864 cases were reported, with 94% west of the Mississippi River. Arizona, New Mexico, and Colorado had the most cases from 2020-2025. Recent notable events include three fatal cases in Mono County, California, and New Mexico's first HPS case of 2025 in Santa Fe County. [cite: 20]
- ReferenceSuper El Niño Could Mean More US Hantavirus Cases This Summer - Newsweek
vertexaisearch.cloud.google.com · 2026-06-02
A potential “super El Niño” developing in the Pacific could increase the risk of rare but deadly hantavirus infections in parts of the United States this summer by fueling rodent populations that carry the disease. The US Centers for Disease Control and Prevention (CDC) began tracking hantavirus in the United States in 1993, with the Sin Nombre strain primarily found in the Four Corners region, which includes Arizona, Colorado, New Mexico, and Utah.
- ReferenceReported Cases of Hantavirus Disease - CDC
vertexaisearch.cloud.google.com · 2026-06-02
The CDC updated its report on April 23, 2026, on hantavirus disease cases in the United States. Since surveillance began in 1993, 890 laboratory-confirmed cases of hantavirus disease, including Hantavirus Pulmonary Syndrome (HPS) and non-pulmonary infections, have been reported through the end of 2023. The report highlights that surveillance started during an outbreak in the Four Corners region (Arizona, Colorado, New Mexico, and Utah), which remains an area of higher prevalence. Data is reported by state to protect patient identities.
- ReferenceReported Cases of Hantavirus Disease - CDC
vertexaisearch.cloud.google.com · 2026-06-02
As of the end of 2023, 890 cases of hantavirus disease were reported in the United States since surveillance began in 1993. Hantavirus pulmonary syndrome (HPS) became a nationally notifiable disease in 1995. Surveillance initially focused on the Four Corners region, where Arizona, Colorado, New Mexico, and Utah meet.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-03
As of May 4, 2026, the CDC reported 864 hantavirus cases in the US between 1993 and 2022, with 94% occurring west of the Mississippi River. The Four Corners region (Arizona, Colorado, New Mexico, Utah) remains a focus. Recent noteworthy events include three fatal cases in Mono County, California, and New Mexico's first HPS case of 2025 in Santa Fe County.
- ReferenceHantavirus explained: What to know after the cruise ship outbreak - Harvard Health
vertexaisearch.cloud.google.com · 2026-06-03
This article explains hantavirus, noting that human-to-human spread is unusual but may have occurred in the current cruise ship outbreak, linked to the Andes virus. It highlights the 1993 outbreak in the Four Corners area (Colorado, New Mexico, Arizona, Utah) due to increased rodent populations. Rodent control remains the primary prevention strategy.
- ReferenceRecent outbreaks of hantavirus-a very lethal and zoonotic virus – An update and counteracting strategies - PMC
pmc.ncbi.nlm.nih.gov · 2026-06-03
A PMC article discusses recent hantavirus outbreaks, highlighting its lethality and zoonotic nature. It mentions that hantavirus surveillance in the US began in 1993 in the Four Corners region (Colorado, New Mexico, Arizona, Utah). The article also references 2022 cases in Brazil (22 cases, 10 deaths) and Panama (29 cases), emphasizing the global distribution and high mortality rates associated with the virus, particularly in South America.
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.