Hantavirus pulmonary disease (HPS) is a rare but serious disease that humans can contract through contact with infected rodents or their urine, saliva, blood, or droppings. Since HPS was first identified in the United States in 1993, there have been 62 cases in California residents and over 600 cases nationally. Approximately 12 percent of deer mice carry hantavirus.
The deer mouse (Peromyscus maniculatus) is the primary reservoir for Sin Nombre Virus, the strain of hantavirus responsible for the human cases in Yosemite National Park, and most human cases in the United States. The deer mouse is found throughout most of the United States, including Yosemite National Park.
For additional information on preventing HPS, visit the Centers for Disease Control and Prevention (CDC) hantavirus website or California Department of Public Health (CDPH) website.
News Releases and Updates
- September 12, 2012: Update: Additional notification to overnight visitors
- September 6, 2012: Update: Yosemite National Park Continues Response to Hantavirus Cases
- August 31, 2012: Hantavirus Pulmonary Syndrome Response Continues at Yosemite National Park
- August 30, 2012: Hantavirus Found in Four More Visitors to Yosemite National Park
- August 27, 2012: Hantavirus Pulmonary Syndrome Response Continues at Yosemite National Park
- August 16, 2012: CDPH Press Release: Hantavirus Pulmonary Syndrome Found in Two California Residents
General Information about Hantavirus
- Centers for Disease Control and Prevention
- For more information on hantavirus you can call the Centers for Disease Control and Prevention (CDC) Hotline at 1-800-CDC-INFO (1-800-232-4636) or 1-404-639-1510.
- California Department of Health
- National Park Service
Information for Health Care Providers