Word: h1n1
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...samples are from a strain of flu virus known as H1N1, a subtype of the influenza A virus: the regular run-of-the-mill seasonal flu, not the dreaded H5N1 avian flu that's prompted countries around the world to stockpile tens of millions of doses of Tamiflu. So how worried should people be about the prospect of drug-resistant strains of influenza A? Only modestly, says World Health Organization spokeswoman Sari Setiogi in Geneva. "Influenza A has been circulating for many years. It's not likely to cause a pandemic," she says. The patients who gave samples...
...farmers have already learned that hard lesson, having faced outbreaks of other avian flus as recently as 2002 and 2004. H5N1 is only one of more than 100 subtypes of the influenza A virus. The majority of the subtypes are found in birds. A few, such as H3N2 and H1N1, have adapted to infect humans. The 2002 avian outbreak, which struck in Virginia, was the H7N2 subtype, and it illustrated the importance of early detection. "The outbreak was not contained in time and spread to 200 farms up and down the Shenandoah Valley," says Lobb...
Using an array of powerful if arcane gene-hunting tools, Taubenberger and Reid slowly picked their way through the shattered genetic landscape of Private Vaughn's cells. This time they got lucky. They found small pieces of flulike RNA. Their subsequent analysis showed that the virus was an H1N1 influenza unlike any flu virus identified during the past 80 years. The closest known strain was Swine Iowa 30--the pig flu isolated by Richard Shope in 1930 and kept alive at various culture repositories ever since. Their findings suggest that the 1918 virus came to people from pigs, not from...