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Deadly Hantavirus Claims Second Victim Who Visited Yosemite National National Park

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A second fatality tied to hantavirus pulmonary syndrome possibly contracted in Yosemite National Park has been confirmed, leading to a search for visitors who stayed in the "Signature Tent Cabins" at Curry Village this summer.

National Park Service officials have set up a phone number -- (209) 372-0822 -- visitors can call at Yosemite to seek information on hantavirus, a disease spread through rodent droppings or urine. At the same time, DNC Parks & Resorts at Yosemite officials are working to contact Curry Village guests to tell them about the recent cases and to urge them to seek medical help if they begin to exhibit flu-like symptoms.

While one death and a second, non-fatal case, related to the virus were announced in August, the second death actually occurred back in June, according to a park release. And Park Service officials say they have learned of a probable fourth case.

Hantavirus is a rare but serious disease that occurs throughout the United States. Early medical attention is critical for individuals who contract hantavirus, a press release from Yosemite said. "The disease begins with fever and aches, but can progress rapidly to life-threatening illness. Public health officials believe the four recent visitors might have been exposed while vacationing at Curry Village in Yosemite National Park," it added.

"The health of our visitors is our paramount concern and we are making every effort to notify and inform our visitors of any potential illness," said Yosemite Superintendent Don Neubacher. "Because people often don't get sick from hantavirus until one to six weeks after exposure, we are encouraging anyone who stayed in Curry Village since June to be aware of the symptoms of hantavirus and seek medical attention at the first sign of illness".

The National Park Service Office of Public Health is working with the Centers for Disease Control and Prevention to heighten public health awareness and detection of hantavirus. The park and concessioner have also increased public education efforts geared towards visitors and park employees. This includes distributing information to all visitors entering the park, information at Curry Village registration area, and notifications throughout the park.

California Department of Public Health and Yosemite National Park Public Health Service officers conduct periodic rodent surveys to monitor deer mouse abundance and virus activity in mouse populations. Yosemite National Park has conducted additional rodent trapping and is increasing rodent-proofing and trapping measures in tent cabins and buildings throughout the park. Structures throughout the park continue to be cleaned by following recommended practices and are inspected regularly. Yosemite also conducts routine rodent proofing of buildings and facilities throughout the park.

Since HPS was first identified in 1993, there have been approximately 60 cases in California and 587 cases nationally, according to park officials. About one third of HPS cases identified have been fatal.

Not all deer mice carry hantavirus, but deer mice with hantavirus have been found throughout the United States. Most infections are caused by breathing small particles of mouse urine or droppings that have been stirred up into the air. If the virus is contracted, the symptoms appear one to six weeks after exposure with fever, headache, and muscle ache, and progresses rapidly to severe difficulty in breathing and, in some cases, death. Early medical attention can greatly increase the chance of survival, so it is important to seek medical attention immediately if an individual experiences any of these symptoms and may have been exposed to rodents.

When people are in wilderness areas or places that harbor mice, individuals can take the following steps to prevent HPS:

Avoid areas, especially indoors, where wild rodents are likely to have been present.

Keep food in tightly sealed containers and store away from rodents.

Keep rodents out of buildings by removing stacked wood, rubbish piles, and discarded junk from around homes and sealing any holes where rodents could enter.

When cleaning a sleeping or living area, open windows to air out the areas for at least two hours before entering. Take care not to stir up dust. Wear plastic gloves and spray areas contaminated with rodent droppings and urine with a 10% bleach solution or other household disinfectants and wait at least 15 minutes before cleaning the area. Place the waste in double plastic bags, each tightly sealed, and discard in the trash. Wash hands thoroughly afterward.

Do not touch or handle live rodents and wear gloves when handling dead rodents. Spray dead rodents with a disinfectant and dispose of in the same way as droppings. Wash hands thoroughly after handling dead rodents.

If there are large numbers of rodents in a home or other buildings, contact a pest control service to remove them.

Comments

I understand that sheets, wool blankets, pillows and towels are provided to guests in these tent cabins….Perhaps housekeeping staff should double check the laundry facilities, and inspect ALL areas where clean linens are stored until guest use.Urine and fecal particles left by infected mice upon linens could easily be inhaled by the people using them.


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