Friday, September 28, 2012

FOXNews.com: Meatpacking plant linked to tainted beef shut down

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Meatpacking plant linked to tainted beef shut down
Sep 28th 2012, 17:22

Published September 28, 2012

Associated Press

  • Raw Beef

The Canadian Food Inspection Agency has temporarily shut a meatpacking plant linked to contaminated beef products that have been distributed across Canada and the United States.

Brian Evans, special advisor to the president of the inspection agency, said Friday that an XL Foods plant in Brooks, Alberta, won't resume operations until it has taken the steps necessary to ensure its products are free of E. coli bacteria.

The U.S. Department of Agriculture earlier this week extended its public health alert about the company's beef to stores in 30 states, including retail giant Walmart.

Canada revoked the plant's permit to export beef to the U.S. on Sept. 13 at the request of the USDA.

The agency says it cannot yet confirm cases of people getting sick from eating the ground beef.

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FOXNews.com: Common herbicide may increase risk of birth defect

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Common herbicide may increase risk of birth defect
Sep 28th 2012, 15:38

Exposure to a common herbicide may increase the risk of a rare congenital disorder, according to a new study.

Researchers at Baylor College of Medicine found that exposure to atrazine – the most commonly used herbicide in the U.S. – may be linked to an increased risk of choanal atresia.  Atrazine is typically used in corn crops.

Choanal atresia is a disorder where tissue forms and blocks the back of the nasal passage, affecting one or both sides of the nasal airway.  While rare, affecting approximately 1 in 7,000 infants, the condition can be serious because it can impede a baby's ability to breathe.  

Infants with choanal atresia blocking both sides of the airway may suffer breathing failure and require resuscitation on delivery. Doctors typically treat the condition through surgery to remove the obstruction.

Using the Texas Birth Defects Registry, researchers found women who lived in the counties with the highest levels of estimated atrazine application were 80 percent more likely to give birth to a child with choanal atresia or stenosis compared to those who lived in counties with the lowest levels. Choanal stenosis is a less severe form of the disorder.

While the researchers controlled for various socioeconomic and demographic factors, and found no impact on the risk observed, Lupo said areas with higher atrazine application do tend to share certain characteristics.

"If a county has a lot of acreage devoted to farming, and a lot of that acreage is corn crops, it is more likely to have higher atrazine application compared to a county with more urban areas and where corn isn't grown," Lupo said.  "…But not all rural counties are characterized by high atrazine application rates."

Few risk factors for choanal atresia have been identified, but researchers believe chemicals that disrupt the mother's endocrine system may play a role.  

Atrazine is believed to be one of these so-called endocrine disrupters.

"One exposure that tipped in the direction [of atrazine] was maternal use of thyroid medications during pregnancy – there's a hypothesis that hormones, and in particular, thyroid dysfunction, are related to choanal atresia risk," Dr. Philip Lupo, an assistant professor in the department of pediatrics at Baylor College of Medicine, told FoxNews.com.  "We know through literature that atrazine is a suspected endocrine disruptor that alters endocrine activity and normal thyroid levels."

Lupo said atrazine likely affects the endocrine system by mimicking certain hormones in the body, thus blocking their activity and upsetting normal biological processes.

However, while the study's results were significant, Lupo said more independent studies would need to be done in other areas before making any new policy recommendations.

The study was published in the Journal of Pediatrics.

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FOXNews.com: Sleep, anxiety drugs linked to dementia

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Sleep, anxiety drugs linked to dementia
Sep 28th 2012, 15:22

Older adults taking psychiatric medications, such as Valium or Xanax, may be at increased risk of dementia, a new French study suggests.

In the reports, adults older than 65 who took drugs known as benzodiazepines were 50 percent more likely to develop dementia over a 15-year period, compared with those who did not take the drugs.

Benzodiazepines are widely prescribed medications, used to treat symptoms of anxiety and sleep disorders.

The study findings held true even when taking into account other factors that may affect people's dementia risk, such as age, gender, diabetes and early signs of dementia. The researchers also accounted for some factors that lead people to start taking benzodiazepines in the first place.

Researchers caution that the study only found an association between the drugs and dementia, and not a direct cause-and-effect link.

However, the findings agree with those of several earlier studies looking at the link between benzodiazepines and dementia. Use of the medications has also been tied to other serious events in older adults, such as falls.

"Considering the extent to which benzodiazepines are prescribed and the number of potential adverse effects of this drug class in the general population, [their] indiscriminate, widespread use should be cautioned against," the researchers said.

Whenever possible, use of the drugs should be limited to just a few weeks, the researchers said. Currently, despite evidence that the drugs work only over short periods, many people take them for years.

The study followed about 1,000 older adults living in France who, at the study's start, did not have dementia and were not taking benzodiazepines. Over the first five years of the analysis, 95 participants started taking benzodiazepines.

Fifteen years later, 253 cases of dementia were confirmed — 30 in benzodiazepine users and 223 in non-users. That puts the yearly rate of dementia among those taking benzodiazepines at 4.8 cases per 100 people, compared with 3.2 cases per 100 people in those who did not take the drugs.

The researchers noted that, in determining dementia risk, they were able to account for the possible effects of depression, which is associated with the development of dementia. However they were not able to determine whether anxiety and or sleep disorders, which may be early signs of dementia, played a role a in the results.

Future research should examine whether use of the drugs is linked to dementia in younger people, and whether the drug dosage affects the risk, the researchers said.

The study is published Friday in the British Medical Journal.

Pass it on: Use of drugs called benzodiazepines is linked with an increased risk of dementia in older people.

 

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FOXNews.com: Meningitis outbreak hitting HIV-infected men in NYC

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Meningitis outbreak hitting HIV-infected men in NYC
Sep 28th 2012, 15:15

Published September 28, 2012

Associated Press

A deadly cluster of bacterial meningitis has erupted among HIV-infected gay men in New York City. It's left one person dead in the last month and another in critical condition.

The city's health department on Thursday alerted local doctors about the outbreak. It includes a dozen cases in the last two years. But it seems to have accelerated with four cases in the last four weeks.

Of the 12 total cases, four died.

Investigators are trying to find out how the infection spread. People the men were in close contact have been treated with antibiotics.

Bacterial meningitis and an associated blood can cause swelling of the membranes covering the brain and spinal cord. The disease is rare, but people with HIV-weakened immune systems are more susceptible.

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FOXNews.com: Animals suspected in spread of new virus

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Animals suspected in spread of new virus
Sep 28th 2012, 12:54

Britain's Health Protection Agency has published an early genetic sequence of the new respiratory virus related to SARS that shows it is most closely linked to bat viruses, and scientists say camels, sheep or goats might end up being implicated too.

So far, there are no signs the virus will be as deadly as SARS, or severe acute respiratory syndrome, which killed hundreds of people, mostly in Asia, in a 2003 global outbreak.

In Geneva, WHO spokesman Glenn Thomas told reporters Friday that so far the signs are that the virus is "not easily transmitted from person to person" - but analyses are ongoing.

Global health officials suspect two victims from the Middle East may have caught it from animals.

"It's a logical possibility to consider any animals present in the region in large numbers," said Ralph Baric, a coronavirus expert at the University of North Carolina at Chapel Hill. "Biologists now need to go into the area and take samples from any animals they can get their hands on, including camels and goats," he said. Baric said it was crucial to find out how widespread the virus is in animals and what kind of contact might be risky for people.

Baric suggested bats might be spreading the virus directly to humans since the two confirmed infections happened months apart. "If there was an established transmission pattern from other animals, we probably would have seen a lot more cases," he said.

The World Health Organization said it is considering the possibility the new coronavirus sickened humans after direct contact with animals. The agency is now working with experts in the Middle East to figure out how the two confirmed cases got infected but could not share details until the investigation was finished.

One patient was a Saudi Arabian man who died several months ago while the other is a Qatari national who traveled to Saudi Arabia before falling ill and is currently in critical but stable condition in a London hospital.

Earlier this week, WHO issued a global alert asking doctors to be on guard for any potential cases of the new respiratory virus, which also causes kidney failure.

Saudi officials have already warned that next month's annual Muslim Hajj pilgrimage, which brings millions to Saudi Arabia from all around the world, could allow the virus to spread. As a precautionary measure, they are advising pilgrims to keep their hands clean and wear masks in crowded places.

Experts said knowing where a virus comes from provides clues on how to stop it.

"This means we could prevent the fire before it starts instead of rushing towards it with fire trucks and water hoses afterwards," said Michael Osterholm, an infectious diseases expert at the University of Minnesota.

Osterholm said it was possible bats had simply passed on the virus from other animals and that there could be a complicated transmission chain that ultimately ended in humans.

Viruses reproduce as they infect animals and people, giving them more chances to evolve into a deadlier version.

"We don't know enough about coronaviruses to predict which mutations might make them more lethal or transmissible," Osterholm said. "But you don't want to tempt genetic fate with microbes because you're bound to lose most times."

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FOXNews.com: David Blaine's electrifying stunt is shockingly safe

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David Blaine's electrifying stunt is shockingly safe
Sep 28th 2012, 12:55

In his latest stunt, illusionist David Blaine plans to make his body a conduit for an electric current flowing between two high-voltage electrodes for three days straight. The magician says he'll face off with 1 million volts in what he told the Daily News would be his "most dangerous" feat ever, but at least one MIT physicist won't be losing sleep over Blaine's safety, saying the trick seems mostly risk-free.

A trailer for the stunt, which is set to begin on Manhattan's Pier 54 on Oct. 5, shows Blaine standing at the center of a dark room, his mesh bodysuit lit only by two fluttering arcs of electricity emanating from his outstretched arms.

If the teaser gives any indication of what will actually transpire next month, Blaine's odds of besting death in the trick he calls "Electrified: One Million Volts Always On" are pretty good.

"He has a conducting suit, all the current is going through the suit, nothing through his body," said John Belcher, a physics professor at the Massachusetts Institute of Technology and a co-investigator on a plasma experiment aboard NASA's Voyager 2 craft. "There is no danger in this that I see. I would do it, and I am 69 years old and risk-averse. I just would have to take a nap."

Blaine's safety during the stunt will rely on an altered version of a piece of technology that has been around since 1836, when it was invented by a mostly self-taught English scientist named Michael Faraday. The device, called a Faraday cage, is a hollow shell or mesh frame of conducting material.

Faraday realized that when exposed to a current passing through an external electric field, such an enclosure would distribute charge on its surface in a way that resulted in no net effect on the interior. In what is probably the earliest prototype for Blaine's stunt, Faraday demonstrated this fact in 1836 by coating a room with metal foil and standing inside of it while powerful electric discharges flowed over its outside.

When Blaine dons his mesh suit, he "is just wearing the cage instead of being inside of the cage," Belcher told Life's Little Mysteries.

Blaine's choice to advertise the voltage of the electrodes he'll be standing between, rather than the amperage of the current that will flow through his Faraday suit, is perhaps somewhat misleading. What directly concerns a human's risk of electrocution is not voltage (in a common analogy, voltage is likened to water pressure if electric current is thought of as the flow rate of water through a pipe), but the amount of current coursing through an electric field, measured in amperes, or amps. And within an electric field of a given strength, the current passing through an object will vary depending on that object's resistance, a property governed by its material.

"I would have no fear of having 1 million volts between my head and the soles of my shoes as long as I made sure my shoes had a really, really high resistance," said Belcher.

Though the only immediate threat Blaine is likely to face during the three-day stunt is fatigue, some of the subtle byproducts of an exposed arc of current might actually pose a small health risk, according to Belcher.

"He is surrounded by all these lightning discharges, [which] would certainly emit radiation and there would be a lot of ozone," he said." [That] might be a problem for three days."

 

Copyright 2012 Lifes Little Mysteries, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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FOXNews.com: FDA warning public of risks of online pharmacies

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FDA warning public of risks of online pharmacies
Sep 28th 2012, 13:27

The Food and Drug Administration is warning U.S. consumers that the vast majority of Internet pharmacies are fraudulent and likely are selling counterfeit drugs that could harm them.

The agency on Friday launched a national campaign, called BeSafeRx, to alert the public to the danger, amid evidence that more people are shopping for their medicine online, looking for savings and convenience.

"Buying prescription medicine from a fake online pharmacy can be dangerous, or even deadly."

- FDA

Instead, they're likely to get fake drugs that are contaminated, are past their expiration date or contain no active ingredient, the wrong amount of active ingredient or even toxic substances such as arsenic and rat poison. They could sicken or kill people, cause them to develop a resistance to their real medicine, cause new side effects or trigger harmful interactions with other medications being taken.

"Our goal is to increase awareness," FDA Commissioner Dr. Margaret Hamburg told The Associated Press, "not to scare people away from online pharmacies. We want them to use appropriate pharmacies."

That means pharmacies that are located in the U.S., are licensed by the pharmacy board in the patient's state and have a licensed pharmacist available to answer questions. In addition, the pharmacy must require a valid doctor's prescription for the medicine. Online drugstores that claim none is needed, or that the site's doctor can write a prescription after the customer answers some questions, are breaking the law.

Research by the National Association of Boards of Pharmacy, which represents the state pharmacy boards, found that of thousands of online pharmacies it reviewed, only about 3 percent follow state and federal laws. In fact, the group's website lists only a few dozen Internet pharmacies that it has verified are legitimate and following the rules.

Most consumers don't know that. An Internet survey, conducted by the FDA in May, questioned 6,090 adults. It found that nearly one in four Internet shoppers has bought prescription drugs online, and nearly three in 10 said they weren't confident they could do so safely.

The campaign comes after some high-profile cases of counterfeit drugs reaching American patients earlier this year.

In February and again in April, the FDA warned doctors and cancer clinics around the country that it had determined they had bought fake Avastin, a pricey injectable cancer medicine, from a "gray market" wholesaler. The fake Avastin vials originated in Asia or Eastern Europe and were transferred through a network of shady wholesalers before being sold to clinics by a wholesaler claiming to be in Montana.

In another case, the FDA issued a warning in May after learning consumers shopping on the Internet had bought fake versions of generic Adderall, a popular medication for attention deficit hyperactivity disorder.

No deaths or serious injuries have been linked to those fakes, but Hamburg notes that when drugs don't help patients get better, doctors usually blame the disease or assume a different medicine is needed. That means most fakes aren't detected.

So the FDA, which has put increasing focus on the counterfeiting problem, on Friday launched a website, www.FDA.gov/BeSafeRx , that shows consumers how to determine if an online pharmacy is safe.

"Buying prescription medicine from a fake online pharmacy can be dangerous, or even deadly," the site warns.

It includes tips on how to spot illegal pharmacies, links to state databases of licensed pharmacies and explanations of all the dangers of rogue pharmacies. Besides likely getting fake drugs, that includes the risk that they will infect your computer with viruses, sell your personal and financial information to other rogue websites and Internet scammers, or charge you for products you never ordered or received.
  

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