Hantavirus is a life-threatening disease spread to humans by rodents. It has symptoms similar to influenza.
Hantavirus is carried by rodents, especially deer mice. The virus is found in their urine and feces, but it does not make the animal sick.
It is believed that humans can get sick with this virus if they come in contact with contaminated dust from mice nests or droppings. You may come in contact with such dust when cleaning homes, sheds, or other enclosed areas that have been empty for a long time.
Hantavirus does not spread between humans.
Rodents carrying the hantavirus have been found in many U.S. national parks. As of November 1, 2012, the National Park Service (NPS) has announced a total of 10 confirmed cases of hantavirus infection in people who recently visited Yosemite National Parks. Campers and hikers may be more likely to catch the disease than most people. This is because they pitch tents on the forest floor and lay their sleeping bags down in musty cabins.
However, only a couple of cases have been directly linked to camping or hiking. Most people who are exposed to the virus have come in contact with rodent droppings in their own homes.
The early symptoms of hantavirus disease are similar to the flu and include:
People with hantavirus may begin to feel better for a very short amount of time, but within 1-2 days, it becomes hard to breathe. The disease gets worse quickly. Symptoms include:
The health care provider will perform a physical exam. This may reveal:
The following tests may be done:
People with hantavirus are admitted to the hospital, often to the intensive care unit (ICU).
Treatments will include:
There is no effective treatment for hantavirus infection involving the lungs.
Hantavirus is a serious infection that gets worse quickly. Lung failure can occur and may lead to death. Even with aggressive treatment, more than half of people who have this disease in their lungs die.
Complications of hantavirus may include:
These complications can lead to death.
Call your health care provider if you develop flu-like symptoms after you come in contact with rodent droppings or rodent urine, or dust that is contaminated with these substances.
Avoid exposure to rodent urine and droppings.
If you must work in an area where contact with rodent urine or feces is possible, follow these recommendations from the Centers for Disease Control and Prevention (CDC):
Hantavirus pulmonary syndrome; Hemorrhagic fever with renal syndrome
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Updated by: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.
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