Cases of Hantavirus by State (2026 Updates) | Box-Kat
Arizona, United StatesConfidence 95%Jun 1, 2026
This report provides an update on hantavirus activity in the US, referencing a May 2026 cruise ship outbreak, a positive hantavirus mouse in San Diego, and states with the most confirmed cases between 2020-2025.
Species mentioned
- mouse
Source articles
Every claim above is derived from publicly available reporting. Click through to read the original at the publisher.
- PrimaryCases of Hantavirus by State (2026 Updates) | Box-Kat
box-kat.com · 2026-06-01
This report mentions the May 2026 cruise ship outbreak and also highlights specific US hantavirus activity. In January 2026, San Diego County, California, reported the first positive hantavirus mouse of the year. It also notes that Arizona, New Mexico, and Colorado have had the most confirmed cases in the US between 2020-2025.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-01
Box-Kat reported on May 4, 2026, an update on hantavirus cases in the US, noting 864 cases between 1993 and 2022, with 94% occurring west of the Mississippi River. The article highlights the MV Hondius cruise ship outbreak in May 2026, which caused three deaths and sickened at least four, raising concerns about human-to-human transmission of the Andes virus. It also references past cases, including Betsy Arakawa's death in Santa Fe, New Mexico, and three fatal cases in Mono County, California, in 2025. Arizona, New Mexico, and Colorado had the most confirmed cases between 2020-2025.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-01
MedPage Today reported on May 12, 2026, that the CDC issued a Health Alert Network advisory on May 8, warning clinicians about potential imported hantavirus cases from the MV Hondius cruise ship outbreak. While the risk of broad US spread is low, early symptoms can be confused with other illnesses. Several state health departments, including Arizona, California, Georgia, Texas, and Virginia, are monitoring individuals. New Jersey and Maryland are also monitoring contacts from a flight with a symptomatic passenger, as is a Spanish woman.
- ReferenceReported 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.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases
medpagetoday.com · 2026-05-09
The CDC issued a Health Alert Network advisory on May 8, 2026, warning clinicians about potential imported hantavirus cases linked to the M/V Hondius cruise ship outbreak. While broad spread in the U.S. is "extremely unlikely," early symptoms can be confused with other illnesses. Several state health departments, including Arizona, California, Georgia, Texas, Virginia, New Jersey, and Maryland, are monitoring individuals.
- ReferenceHantavirus-Caused Cruise Ship Deaths Raise Disease Transmission, Prevention, and Global Alliance Issues
vertexaisearch.cloud.google.com · 2026-06-01
The hantavirus outbreak on a cruise ship expedition in the South Atlantic, with 12 known or suspected cases and three deaths, has highlighted issues of rodent management, vector control, and disease transmission. The Andes virus, primarily found in Argentina and Chile, is the only hantavirus known for limited human-to-human transmission. Passengers from the cruise ship have returned to several U.S. states, including Arizona, California, Georgia, Texas, and Virginia, where they are being monitored by health authorities. The first individual to show symptoms on April 6, after three months of tra
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993
vertexaisearch.cloud.google.com · 2026-06-01
More than 300 people have died from hantavirus in the U.S. since the Centers for Disease Control and Prevention (CDC) began surveillance in 1993. Hantavirus is a rare but often severe disease, primarily spread to humans through contact with infected rodents. In the United States, most cases are linked to the Sin Nombre virus, carried by deer mice. The states with the highest number of confirmed cases and deaths include New Mexico (54 deaths), Colorado (45 deaths), Arizona (32 deaths), California (24 deaths), and Washington (20 deaths). The Andes strain, mainly found in South America, is the on
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993 - Newsweek
newsweek.com · 2026-06-01
On May 7, 2026, Newsweek reported that over 300 people have died from hantavirus in the U.S. since 1993, according to CDC data, with 890 total cases. Most cases are linked to the Sin Nombre virus and occur west of the Mississippi River, particularly in New Mexico, Colorado, Arizona, California, and Washington. The article contextualizes the recent MV Hondius cruise ship outbreak, which caused three deaths, by highlighting the Andes strain's rare person-to-person transmission.
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993 - Newsweek
newsweek.com · 2026-05-07
Newsweek reported on May 7, 2026, that over 300 people have died from hantavirus in the U.S. since the CDC began surveillance in 1993. States with the most confirmed cases include New Mexico, Colorado, Arizona, California, and Washington. The article also highlighted the recent deaths of three people following an outbreak on the MV Hondius ship, which set sail from Argentina, noting that the Andes strain is capable of limited person-to-person transmission.
- ReferenceNewsweek Highlights CDC Map Showing Over 300 Hantavirus Deaths in US Since 1993
newsweek.com · 2026-06-01
Newsweek reported on a CDC map illustrating that over 300 people have died from hantavirus in the US since surveillance began in 1993. Between 1993 and 2023, 890 cases were reported, with a 35% fatality rate. States with the most confirmed cases and deaths include New Mexico, Colorado, Arizona, California, and Washington, with 94% of cases occurring west of the Mississippi River. The article also mentions the recent cruise ship outbreak as a separate event.
- ReferenceWhat Arizonans Should Know About Andes Virus and Hantavirus
vertexaisearch.cloud.google.com · 2026-06-01
The Arizona Department of Health Services is monitoring the Andes virus outbreak from the M/V Hondius cruise ship, with two Arizona residents being monitored (one asymptomatic, one in Nebraska for assessment). The state has detected no Sin Nombre virus cases in 2026 so far, but reported seven cases with four deaths in 2025, primarily in northern Arizona.
- ReferenceFrom 1993 to present day: this is the timeline of hantavirus in the U.S. and the numbers behind the infectious disease
en.as.com · 2026-05-14
A May 14, 2026 report on hantavirus in the US, noting fewer than 900 total cases from 1993-2023 with a 36-40% mortality rate. Most cases are concentrated in western states like New Mexico, Colorado, Arizona, and California. Different strains like Black Creek Canal virus (Florida), Bayou virus (Louisiana), and New York-1 virus (New York) have been identified.
- ReferenceHantavirus Patients Under Quarantine Could Go Home—If They Agree To 24/7 Surveillance, Report Says (Latest Updates)
vertexaisearch.cloud.google.com · 2026-06-01
Sixteen U.S. passengers from the MV Hondius cruise ship are isolating at the National Quarantine Unit in Nebraska, while two others, including one with symptoms of the Andes variant, are in Atlanta for health assessments. New Jersey is also monitoring two residents potentially exposed to a cruise passenger. Other states like California, Arizona, Georgia, and Texas are monitoring contacts. The CDC has not confirmed any U.S. cases of the Andes virus from this outbreak.
- ReferenceHantavirus Patients Under Quarantine Could Go Home—If They Agree To 24/7 Surveillance, Report Says (Latest Updates)
vertexaisearch.cloud.google.com · 2026-06-01
Sixteen US passengers from the hantavirus-stricken MV Hondius cruise ship are isolating at the National Quarantine Unit in Nebraska, with two others, including one symptomatic patient, at Emory University in Atlanta. They have reportedly been offered a deal to complete their quarantine at home under 24/7 surveillance. The article details confirmed cases and deaths from the cruise ship, including a Dutch couple, a German woman, a British expedition guide hospitalized in South Africa, and a Swiss man receiving medical care in Zurich. Other states like New Jersey, California, Arizona, Texas, and
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-01
The CDC issued a Health Alert Network (HAN) advisory on hantavirus, urging clinicians to be aware of potential imported cases of Andes virus linked to a cruise ship outbreak, while emphasizing that broad spread in the U.S. is 'extremely unlikely.' The agency noted that early symptoms can be confused with other viral illnesses and recommended repeated testing after 72 hours of symptom onset. Several state health departments, including Arizona, California, Georgia, Texas, and Virginia, are monitoring individuals.
- Reference2026 Hantavirus Cases in America - ArcGIS StoryMaps
vertexaisearch.cloud.google.com · 2026-06-01
This ArcGIS StoryMap, updated May 11, 2026, details the 2026 hantavirus outbreak, primarily linked to the MV Hondius cruise ship and the Andes strain, which is known for rare human-to-human transmission. While US health agencies state the risk to the general public remains low, travelers exposed to the virus are being monitored and quarantined as a precaution. A GIS map illustrates the geographic distribution of known cases and monitored individuals across the United States, including states such as Arizona, California, Georgia, Texas, New Jersey, Virginia, and Nebraska.
- 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.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-01
MedPage Today reported on May 12, 2026, that the CDC issued a Health Alert Network advisory urging clinicians to be aware of potential imported hantavirus cases linked to the cruise ship outbreak. While broad spread in the U.S. is deemed 'extremely unlikely,' several state health departments, including Arizona, California, Georgia, Texas, Virginia, New Jersey, and Maryland, are monitoring individuals. A Spanish woman and a Dutch flight attendant were also mentioned as being monitored or tested.
- ReferenceNo hantavirus risk to the public from Arizona resident who was on cruise, officials say
kjzz.org · 2026-06-01
Officials from the Arizona Department of Health Services are monitoring an asymptomatic Arizona resident who was a passenger on the MV Hondius cruise ship. They emphasize that the risk of human-to-human transmission of the Andes virus is rare and requires close contact with a symptomatic individual. The local Sin Nombre virus in Arizona does not spread person-to-person, and the overall risk to the general public is considered very low.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-01
A 2026 update on hantavirus pulmonary syndrome (HPS) cases in the United States indicates that the disease, though rare, continues to surface, primarily in the western US, especially the Four Corners region. Between 2020-2025, Arizona had the most confirmed cases (26), followed by New Mexico (25) and Colorado (13). The article also mentions past fatalities in Mono County, California, and Santa Fe, New Mexico, highlighting the risk even in routine settings.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-01
In January 2026, San Diego County, California, reported the first positive hantavirus rodent detection of the year, a Western harvest mouse found near the Los Peñasquitos Ranch House. This serves as a reminder that hantavirus risk is linked to rodent activity. The article, published May 4, 2026, also provides an overview of hantavirus cases by state in the US from 2020-2025, with Arizona, New Mexico, and Colorado having the highest numbers.
- 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).
- ReferenceCases of Hantavirus by State (2026 Updates)
vertexaisearch.cloud.google.com · 2026-06-02
Box-Kat provided a 2026 update on hantavirus cases by state on May 4, 2026, using CDC data. It notes 864 cases in the US between 1993 and 2022, with 94% west of the Mississippi River. Arizona (26 cases), New Mexico (25), and Colorado (13) had the most cases from 2020-2025. The article also mentions the MV Hondius cruise ship outbreak and the rare person-to-person transmission of the Andes virus.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-02
The CDC issued a Health Alert Network advisory on May 12, 2026, to clinicians regarding the potential for imported hantavirus cases linked to the Andes virus outbreak on a cruise ship. While the risk of broad spread in the U.S. is considered "extremely unlikely," clinicians are urged to be aware of symptoms that can mimic influenza. Several state health departments, including Arizona, California, Georgia, Texas, Virginia, New Jersey, and Maryland, are monitoring individuals who were on the ship or had contact with symptomatic passengers. Andes virus is the only hantavirus known for human-to-hu
- ReferenceHantavirus outbreak: Arizonan being monitored | FOX 10 Phoenix - YouTube
youtube.com · 2026-06-02
An Arizona resident who was on the MV Hondius cruise ship, linked to a hantavirus outbreak, is being monitored after returning home. While the individual has not shown symptoms, the Arizona Department of Health Services (ADHS) is monitoring them for 42 days due to the potential eight-week incubation period of the Andes virus. This strain, found in South America, is the only hantavirus known to spread human-to-human, though it requires very close contact. ADHS emphasizes that hantavirus cases seen in North America are typically spread through infected rodent droppings, urine, or saliva and do
- ReferenceFrom 1993 to present day: this is the timeline of hantavirus in the U.S. and the numbers behind the infectious disease - AS USA
en.as.com · 2026-06-02
An article published on May 14, 2026, provides an overview of hantavirus in the U.S., noting that fewer than 900 total cases were reported from 1993 through 2023, with current mortality rates around 36% to 40%. Most cases continue to occur in western states, including New Mexico, Colorado, Arizona, and California, particularly in the Four Corners region. The article highlights the rarity of the disease in the U.S. but emphasizes its high fatality rate and rapid progression as ongoing concerns for health experts.
- 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
- ReferenceArizona resident was aboard ship struck by hantavirus outbreak
12news.com · 2026-05-07
On May 7, 2026, the Arizona Department of Health Services reported monitoring an Arizona resident who was a passenger on the MV Hondius cruise ship, linked to a deadly hantavirus outbreak. The resident is asymptomatic and will be monitored for 42 days. Three deaths and five other illnesses were confirmed on the ship, with the first case confirmed on May 2.
- 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.
- ReferenceCases of Hantavirus by State (2026 Updates)
vertexaisearch.cloud.google.com · 2026-06-02
Hantavirus Pulmonary Syndrome (HPS) cases continue to surface in the United States, primarily in the western states, especially the Four Corners region. Between 2020-2025, Arizona recorded 26 confirmed cases, New Mexico 25, and Colorado 13. The article also highlights three fatal cases in Mono County, California, and New Mexico's first HPS case of 2025 in Santa Fe County, underscoring ongoing regional presence.
- 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.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-02
The CDC issued a Health Alert Network advisory to clinicians, warning of the potential for imported hantavirus cases related to the cruise ship outbreak. Several US states, including Arizona, California, Georgia, Texas, Virginia, New Jersey, and Maryland, are monitoring individuals.
- ReferenceWhat Arizonans Should Know About Andes Virus and Hantavirus
vertexaisearch.cloud.google.com · 2026-06-02
The Arizona Department of Health Services (ADHS) is actively monitoring the Andes virus outbreak linked to the MV Hondius cruise ship. As of May 12, 2026, there are no confirmed Andes virus cases in Arizona, and the overall risk to Arizonans remains low. One Arizona resident who was onboard the cruise ship is currently being monitored by the Maricopa County Department of Public Health and is asymptomatic. ADHS also issued a reminder about the ongoing risk of Sin Nombre virus, which is endemic to Arizona, and advises residents to take preventative measures against rodent exposure.
- ReferenceCDC tightens home monitoring guidance for high-risk hantavirus contacts
washingtonpost.com · 2026-05-15
On May 15, 2026, the Centers for Disease Control and Prevention (CDC) significantly strengthened its guidance for Americans at the highest risk of exposure to the hantavirus outbreak linked to a recent cruise ship. High-risk individuals are now instructed to remain at home, severely limit contact with others, avoid entering buildings other than their residence, and coordinate any essential travel with their state or local health department. This updated guidance also escalated the frequency of monitoring from once-daily check-ins to twice-daily, in-person visits by public health officials. Pu
- ReferenceHantavirus in AZ; 'Baywatch' actor David Chokachi | FOX 10 Talks - FOX 10 Phoenix
news.google.com · 2026-06-02
Hantavirus in AZ; 'Baywatch' actor David Chokachi | FOX 10 Talks FOX 10 Phoenix
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993 - Newsweek
vertexaisearch.cloud.google.com · 2026-06-02
More than 300 people have died from hantavirus in the U.S. since the Centers for Disease Control and Prevention (CDC) began surveillance in 1993. The article highlights historical data, noting that between 1993 and 2023, approximately 890 cases of hantavirus were reported in the U.S., with a mortality rate exceeding 34%. Most U.S. cases are linked to the Sin Nombre virus, carried by deer mice, and primarily occur west of the Mississippi River. States with the highest confirmed cases include New Mexico, Colorado, Arizona, California, and Washington. The recent international hantavirus outbrea
- ReferenceHantavirus cruise: 41 people in the United States being monitored as investigation into outbreak source continues | Live Science
vertexaisearch.cloud.google.com · 2026-06-03
Forty-one Americans exposed to hantavirus on the MV Hondius cruise ship are currently under monitoring, with some transported to Nebraska and others in states such as Arizona, Georgia, and California. As of May 12, nine confirmed and two suspected cases were associated with the cruise, resulting in three deaths. A new suspected case was identified in a British man on Tristan da Cunha. The Andes virus has been confirmed as the strain responsible for the outbreak, and public health authorities are continuing their investigations.
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993
vertexaisearch.cloud.google.com · 2026-06-03
A CDC map reveals that over 300 people have died from hantavirus in the U.S. since surveillance began in 1993. Between 1993 and 2023, approximately 890 cases were reported, resulting in 309 deaths, a fatality rate exceeding 34%. The states with the highest number of confirmed hantavirus deaths include New Mexico (54), Colorado (45), Arizona (32), California (24), and Washington (20). The majority of these cases, 94%, occurred west of the Mississippi River. The article also references the recent MV Hondius cruise ship outbreak.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-03
This article provides updated data on Hantavirus Pulmonary Syndrome (HPS) cases in the United States. Between 2020 and 2025, Arizona recorded the highest number of confirmed cases with 26, followed by New Mexico with 25, and Colorado with 13. In January 2026, San Diego County, California, reported the first positive detection of hantavirus in a mouse for the year, serving as a reminder of ongoing rodent activity and associated risks.
- ReferenceFrom 1993 to present day: this is the timeline of hantavirus in the U.S. and the numbers behind the infectious disease
vertexaisearch.cloud.google.com · 2026-06-03
Hantavirus, a rare disease in the U.S., is gaining renewed attention due to recent international outbreaks. From 1993 through 2023, fewer than 900 total cases were reported in the U.S., with mortality rates ranging from 36% to 40%. The majority of cases are concentrated in western states, including New Mexico, Colorado, Arizona, and California. Different strains of hantavirus are found across the country, such as Sin Nombre virus in the Southwest, Black Creek Canal virus in Florida, Bayou virus in Louisiana, and New York-1 virus in New York.
- 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.
- ReferenceCDC Map Shows Where People With Hantavirus Have Died in US Since 1993 - Newsweek
vertexaisearch.cloud.google.com · 2026-06-03
Over 300 people have died from hantavirus in the U.S. since 1993, with 890 cases reported between 1993 and 2023. Most cases are linked to the Sin Nombre virus, primarily found west of the Mississippi River, particularly in New Mexico, Colorado, Arizona, California, and Washington. A recent hantavirus death in Colorado, unrelated to the cruise ship outbreak, serves as a reminder of ongoing domestic transmission from rodents.
- ReferenceCases of Hantavirus by State (2026 Updates)
box-kat.com · 2026-06-03
Hantavirus Pulmonary Syndrome (HPS) cases in the United States are updated for 2026. Between 2020 and 2025, Arizona recorded the most confirmed cases (26), followed by New Mexico (25) and Colorado (13). A vast majority (94%) of US cases between 1993 and 2022 occurred west of the Mississippi River. While a recent cruise ship outbreak has drawn attention, the article emphasizes that for the U.S. population, the primary risk remains exposure to infected rodents, not human-to-human transmission.
- ReferenceCases of Hantavirus by State (2026 Updates) | Box-Kat
vertexaisearch.cloud.google.com · 2026-06-03
A Western harvest mouse found near the Los Peñasquitos Ranch House in San Diego County, California, tested positive for hantavirus in January 2026. This marks the first positive rodent detection reported in the US for the year, serving as a timely reminder of the ongoing hantavirus risk associated with rodent activity. The article also provides updated hantavirus pulmonary syndrome (HPS) case totals by state for 2020-2025, with most cases occurring in western states like Arizona, New Mexico, and Colorado.
- ReferenceCDC Alerts Clinicians About Potential for Imported Hantavirus Cases | MedPage Today
vertexaisearch.cloud.google.com · 2026-06-03
The CDC issued a Health Alert Network (HAN) advisory, urging US clinicians to be aware of potential imported hantavirus cases in connection with the Andes virus outbreak aboard a cruise ship. Several state health departments, including Arizona, California, Georgia, Texas, Virginia, New Jersey, and Maryland, confirmed they are monitoring individuals. Additionally, a Spanish woman on a flight with a symptomatic passenger from the cruise developed symptoms and is under monitoring.
- 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.
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.