Another problem is the absence of visible illness in poultry infected with the new virus.
And because it's a relatively new virus, most dogs don't have immunity to resist it.
Meantime, the movement of horses is being restricted following the discovery of a new virus last month.
Crucially the new virus seems hard to catch and is difficult to spread.
But this new virus is different from any coronaviruses previously identified in humans.
Scientists are still trying to figure out the source of the new virus.
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We shouldn't be seeing this much influenza and it's with a new virus and that's the cause fo the concern.
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He said an FBI agent told him that his company was the victim of a new virus and an unknown perpetrator.
Eastern Chinese cities have been closing live poultry markets and taking other precautions to limit the spread of the new virus.
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It says internet users' posts speculating on the new virus were deleted.
But she cautioned that little is still known about the new virus.
The more widely a new virus spreads around the world, the more likely it is to land on an antivirus maker's radar.
The axis of anxiety--the Iraqi war, terrorism and a shaky global recovery--is now joined by this lethal new virus creeping around the globe.
The appearance of the new virus has shaken China, where memories of the crippling 2003 outbreak of severe acute respiratory syndrome remain fresh.
It had to happen: Someone has released the next-step toward the next-generation Stuxnet virus, although the target of this new virus remains unclear.
When Microsoft first learned of Scob, it advised users to disable a part of Internet Explorer because it couldn't stop the new virus.
The Chinese press had been running reports of a mysterious new virus, but health officials had promised the public that it was contained.
Beijing and major eastern Chinese cities have closed live poultry markets and are taking other precautions to limit the spread of the new virus.
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With no indication yet whether the new virus is like SARS, which spread from person to person, officials are tracking this new virus closely.
Each new virus harbours small but often advantageous changes in its genes and these accumulate as the virus passes from one person to the next.
Patients in the trial were in the late stages of the disease, and were either being treated with a drug called GM-CSF or the new virus.
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Cities in eastern China where H7N9 first appeared have been closing live poultry markets and taking other precautions to limit the spread of the new virus.
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Microsoft learned of Scob last June, and at first it advised users to disable a part of Internet Explorer because it couldn't stop the new virus.
In his weekly radio address Saturday, President Obama said the concerns over the new virus are justified because lack of immunity makes it potentially risky.
While the new virus strain in the recent outbreak has affected humans, Canadian officials said it has shown up at a pig farm in Alberta, Canada.
The World Health Organization said the new virus has been identified in a 49-year-old man from Qatar who traveled to Saudi Arabia before falling ill Sept. 3.
So are we ready to battle a pandemic strain of bird flu if this new virus picks up the capacity to more efficiently spread from person to person?
Eastern Chinese cities where most H7N9 cases have been concentrated have closed live poultry markets and are taking other precautions to limit the spread of the new virus.
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Eastern Chinese cities where most H7N9 cases have been concentrated have also closed live poultry markets and taking other precautions to limit the spread of the new virus.
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