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MessagePosté le: Mer 7 Mar - 03:38 (2018)    Sujet du message: nike air max 2017 noir homme soldes Répondre en citant

WASHINGTON nike air max 2017 rouge homme , Dec. 29 (Xinhua) -- Chinese and U.S. researchers said Monday they have found how changes in H9N2, a flu virus that has plagued Chinese poultry farms for decades, helped create the novel avian H7N9 influenza that has killed at least 115 people since 2013 and raised a pandemic concern.

The results, published in the U.S. journal Proceedings of the National Academy of Sciences, underscored the need for continued surveillance of flu viruses circulating on poultry farms and identified changes in the H9N2 virus that could serve as an early warning sign of emerging flu viruses with the potential to trigger a pandemic and global health emergency.

H9N2, which has low pathogenicity for avians nike air max 2017 rouge femme soldes , was first identified in chicken farms in the south China's Guangdong Province in 1994. Genetic analysis indicated H7N9's six internal genes all originated from H9N2. However, the H7N9 virus is more highly pathogenic in humans than H9N2.

To investigate the H9N2's role in the genesis of the H7N9 virus, researchers at the China Agricultural University, Jude Children's Research Hospital in Memphis, Tennesee, and other research organizations used whole genome sequencing to track the evolution of the H9N2 chicken viruses mainly in farm chickens in China between 1994 and 2013.

The analysis showed that the genetic diversity of H9N2 viruses fell sharply in 2009 and that from 2010 to 2013 nike air max 2017 rouge femme , an H9N2 virus emerged as the predominant subtype thanks to its genetic makeup that allowed it to flourish despite widespread vaccination of chickens against H9N2 viruses.

The dominant H9N2 virus "had changed antigenicity and improved adaptability in chickens," co-corresponding author Jinhua Liu, professor of the College of Veterinary Medicine at the China Agricultural University, told Xinhua. "That may be one reason for its widespread outbreak from 2010 to 2013."

The emergence of this dominant H9N2 virus, Liu continued, was the first step in the genesis of the H7N9 viruses because it greatly increased the likelihood of reassortment between H9N2 and other flu subtypes. Reassortment refers to the tendency of flu viruses to swap genes.

Before long nike air max 2017 rouge soldes , the dominant H9N2 virus contributed its six internal genes to the novel H7N9 viruses by reassortment, which has caused two outbreaks of human infection, including at least 375 known cases and 115 deaths since March 2014.

"In the past, we have paid great attention to highly pathogenic forms of avian influenza virus such as H5N1, while low pathogenic forms are largely neglected," Liu said. "But H9N2 has acted as the gene donor for H7N9 nike air max 2017 rouge , H10N8, H6N1 and other viruses that can infect humans, and our study suggests that the prevalence and variation of H9N2 in farmed poultry could provide an early warning of the emergence of novel reassortants with pandemic potential."
Adam Scott of Australia tees off during round one of the 2014 Australian Masters on Thursday in Melbourne. Photo: CFP
World No.2 Adam Scott struggled in the opening round and was six strokes behind the leaders in his quest for a third straight Australian Masters in -Melbourne on Thursday.

The defending champion shot a -one-over-par 73 in blustery conditions at the Metropolitan Golf Club in a round containing a double-bogey, one bogey and an eagle.

Scott, who is gearing for a crack at world No.1 Rory McIlroy in next week's Australian Open in Sydney, was back in the pack in a tie for 51st place behind four co-leaders.

Australians Steven Bowditch nike air max 2017 rose soldes , -Michael Wright, Stephen Allan and amateur Todd Sinnott opened the tournament with five-under rounds of 67.

It could have been significantly worse for Scott had he not managed a late eagle on the par-five sixth - his 15th hole after starting on the back nine.

"A strong northerly [wind] from the get go was always going to make it tough," Scott said.

"Unfortunately, I came a little unstuck on 18 and I was scrambling for the rest of the day from there, but I managed to salvage a couple of shots and walked off feeling not too bad."

"If the conditions are the same [tomorrow], just everyone's out there just hanging on doing the best they can nike air max 2017 rose ," the 2013 US Masters champion told -reporters by the scoring hut. "There's no way to attack in this wind."

Scott is vying to become the first -golfer to claim three successive Australian -Masters gold jackets.

His boyhood idol and fellow -countryman Greg Norman won six -Australian Masters, but never more than two in a row.

Scott will again be playing in all of Australia's big three end-of-year tournaments - the Masters, Open and Australian PGA Championship.

The first round continued a -stellar year for US-based Bowditch after scoring a breakthrough victory at the Texas Open in March to rise to world No.91.

"I didn't feel like I played that great but I never really made any mistakes," Bowditch said.

"I hit some good shots early and didn't really capitalize on them."

American Kyle Stanley was the best of the small overseas contingent with three-under 69, one ahead of countryman Zac Blair, while a third American Boo Weekley was in a tie for 33rd with a par round of 72.

The Masters nike air max 2017 noir homme soldes , whose roll call of past winners includes Scott, Norman, Ian Poulter (2011), Tiger Woods (2009), -Justin Rose (2006) and Colin Montgomerie (2001), has fallen on hard times with organizers unable to entice leading international stars to play.

JERUSALEM nike air max 2017 noir homme , Jan. 13 (Xinhua) -- Israeli leaders and multitude of mourners gathered Tuesday with the families of four Jewish victims of last week's terror attack on a Paris kosher supermarket for a solemn funeral ceremony at a Jerusalem cemetery.

Yoav Hattab, Yohan Cohen, Philippe Braham and Francois-Michel Saada, were gunned down on Friday during a hostage attack on "Hyper Casher" supermarket in eastern Paris. They were among 17 victims killed last week in Paris amid a . Cheap Jerseys   Cheap Jerseys From China   Cheap NFL Jerseys China   Cheap NCAA Football Jerseys   Cheap Jerseys Online   Cheap New NHL Jerseys   Cheap NFL Sports Jerseys   Cheap NFL Sports Jerseys   Wholesale NFL Jerseys   Wholesale Nike NFL Jerseys 

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