Sentences with phrase «h1n1 of human origin»

Not exact matches

Nelson and her colleagues found that flu in pigs «follows long - distance swine movements from the southern U.S. to the Midwest,» with most of the human - origin H1N1 arriving at Midwest hog farms coming from the Southeast, and most of the swine - origin H1N2 coming from the south - central U.S. And that means the Midwest, as the final destination for many of these pigs, is «likely to provide a reservoir for multiple genetically distinct variants to co-circulate and exchange segments via re-assortment because of the continual importation of swine influenza viruses from other regions,» the researchers noted.

All influenza viruses ultimately come from birds, and the paper begins the somewhat operatic and knotty story of this outbreak's origins with an H1N1 first isolated in swine in 1930, which itself was a close relative of the virus that caused the 1918 pandemic in humans.

Pig studies have taken on a new cachet because of the swine origins of the 2009 A (H1N1) strain that's causing the current pandemic — and the pig flu research community's eerily prescient predictions that something like it was bound to make headway in humans.

By solving the origins and the reassortments that led to the 2009 A / H1N1 pandemic, researchers might be able to study existing «brothers and sisters» of the virus to understand the type of mutations needed to allow a virus to jump into humans.

CDC researchers took ferrets never infected with an influenza virus and injected them with this year's vaccine, which has an H1N1 component of human, not swine, origin.