NDDoH Reminder: Take steps to protect yourself against Hantavirus disease

State News

Warning signs for the hantavirus, are posted throughout Curry Village at Yosemite National Park, Calif, on Tuesday August 28, 2012. Four people have been infected with the hantavirus, two of which have died while staying at the Curry Village tent cabins at Yosemite National Park in California. (Photo by Michael Macor/San Francisco Chronicle via Getty Images)

As the weather warms, many people will be cleaning cabins, sheds and other outdoor buildings that have been closed for the winter. These are places where one is more likely to be exposed to hantavirus.

Hantavirus pulmonary syndrome (HPS) is a viral infection that can cause severe lung disease. Typically, infected rodents spread the virus in their urine, droppings and saliva. The virus is transmitted when someone breathes in air contaminated by the virus, and on rare occasions, it can be transmitted through an infected rodent bite.

“People are most often exposed to hantavirus when they inhale dust while cleaning or occupying previously vacant cabins, sheds or other dwellings and outbuildings that contain rodents, rodent droppings and rodent nests,” said Levi Schlosser, epidemiologist with the NDDoH Division of Disease Control. “Currently, only supportive treatment exists for hantavirus disease, so it is important to be cautious when cleaning rodent infestations to properly prevent infection.”

NDDoH offers the following tips to avoid hantavirus infection when cleaning a building with signs of rodent infestation:

  • Ventilate the space by opening the doors and windows for 30 minutes before you start cleaning.
  • Wear gloves and use disinfectant when cleaning up dead rodents or their urine, droppings and nests.
  • Saturate the material with disinfectant. Let it soak per the manufacturer’s instructions on the label before removal.
  • Mop floors, clean countertops, cabinets and drawers with disinfectant.
  • Use a commercial disinfectant registered with the Environmental Protection Agency (EPA) and follow the label instructions or use a bleach solution made with one part bleach and nine parts water (10% solution).
  • Do not stir up dust by sweeping or vacuuming up droppings, urine or nesting materials.
  • Do not let children play in crawl spaces or vacant buildings where rodents may be present.

Symptoms of HPS usually begin two to three weeks after infection. Early symptoms commonly include fever, muscle and body aches, fatigue, headache, dizziness, chills, nausea and vomiting. Within a short period of time, symptoms will worsen to include coughing and shortness of breath as lungs fill with fluid. People with HPS are typically hospitalized.

Eighteen cases of HPS have been reported to the NDDoH since 1993, when the virus was first recognized in the United States. Nine of the 18 reported cases were fatal. Nationally, 728 cases have been reported, with 34% resulting in death, through Jan. 2018. More than 96% of the reported cases have occurred in states west of the Mississippi River.

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