World Bulletin / News Desk
Yosemite National Park expanded a warning about the deadly hantavirus to 230,000 more recent visitors and confirmed on Thursday that a ninth person had contracted the virus, which has already killed three people.
The Californian, the latest person confirmed to have been infected with hantavirus, had stayed in Yosemite in July and has already recovered, National Park Service spokesman John Quinley said.
Yosemite said it had previously alerted 30,000 visitors, who slept in two locations where officials believe the nine visitors were infected, but expanded the warning by sending emails to 230,000 more who stayed elsewhere out of an abundance of caution, Quinley said.
"Because we have heard from concerned guests who stayed throughout the park, today we are reaching out to additional overnight visitors to raise awareness about this rare disease and to ensure they know where to find information regarding hantavirus," the statement said.
"Public health officials have no evidence at this time to indicate that persons who stayed elsewhere in the park this summer were at increased risk of exposure to hantavirus," it said.
Although there is no cure for hantavirus pulmonary syndrome, which kills more than a third of those infected, early detection through blood tests and supportive hospital care increases the chances of survival.
Deer mice carry the virus in their urine and feces. Humans can inhale it when it mixes with dust, especially in confined, poorly ventilated spaces.
Humans have never been known to transmit the disease.
Since it was first identified in the southwest in 1993, hantavirus has infected about 600 Americans. Eight of the nine people confirmed to have been infected at Yosemite are believed to have contracted the virus in insulated tent cabins in Curry Village, while one stayed in the park's back country.
The U.S. Centers for Disease Control and Prevention has sounded a worldwide alert, saying visitors to the tent cabins between June and August may be at risk.
The park is trapping and killing deer mice whose growing numbers may have helped create the conditions that led to the outbreak.
Public health officials trapped three times as many deer mice in the park's Tuolumne Meadows last week than were caught in a 2008 period, indicating that the deer mice population has grown, said Dr. Vicki Kramer, chief of vector-borne diseases at the state Public Health Department.
Dr. Charles Chiu, an infectious disease specialist at the University of California, San Francisco, said the growing deer mice population might help explain the outbreak.
Officials are concerned that more Yosemite visitors could still fall ill because the virus can incubate for up to six weeks after exposure. Early flu-like symptoms of the virus include headache, fever, muscle aches, shortness of breath and coughing.
Researchers havfe said that the flaw leaves data stored by apps vulnerable with almost every category of app considered vulnerable
SpaceX revealed Monday that it is building a test track for the Hyperloop, a concept for ultra-fast ground transport the company’s CEO, Elon Musk, unveiled.
Biologists have created chicken embryos with dinosaur-like faces by tinkering with the molecules that build the birds' beaks.
Product available for pre-order in nine countries but devices won’t ship for weeks.
Nobel Prize-winning scientists' discovery can be manufactured cheaper thanks to Nanografi process.
Most industry experts expect the first product of 5G technology in the run-up to the Tokyo Olympics in 2020.
The slowdown in the rate of rising temperatures, from faster gains in the 1980s and 1990s, has puzzled scientists because heat-trapping greenhouse gas emissions
The discovery challenges currently held theories that black holes and their host galaxies grew in relative lockstep over the eons.
Australian researchers are developing the new way to have a final product for Boeing Co, Airbus Group NV, very quickly than now. 3D printing can cut production times for components from three months to just six days.
Bogachev is charged in the United States with running a computer attack network called GameOver Zeus that allegedly stole more than $100 million from online bank accounts.
The account started sharing videos and photos of the militant group a few days ago
U.S., UK spies hacked SIM card maker Gemalto's system, Intercept says, giving spies ability to monitor calls on billions of phones
The next time an earthquake hits the Pacific Northwest, a handful of computers in offices across the region will have access to a software that will send out an alarm, alerting people before the earthquake strikes.
Researchers in Britain have discovered that limpet teeth exhibit a strength that is potentially higher than spider silk.
Epigenetic differences are one reason identical twins, who have identical DNA, do not always develop the same genetic diseases, including cancer.