CDC - Avian Influenza (Flu) |Spread of Avian Influenza Viruses among Birds
The Spanish flu pandemic was truly global, spreading even to the Arctic and remote Pacific islands. The unusually severe disease killed between 2 and 20% of those infected, as opposed to the more usual flu epidemic mortality rate of 0.1%. Another unusual feature of this pandemic was that it mostly killed young adults, with 99% of pandemic influenza deaths occurring in people under 65, and more than half in young adults 20 to 40 years old. This is unusual since influenza is normally most deadly to the very young (under age 2) and the very old (over age 70). The total mortality of the 1918–1919 pandemic is not known, but it is estimated that 2.5% to 5% of the world's population was killed. As many as 25 million may have been killed in the first 25 weeks; in contrast, HIV/AIDS has killed 25 million in its first 25 years.
CDC - Avian Influenza (Flu) |Spread of Avian Influenza Viruses among Birds
Avian Influenza (Flu) The Virus & Its Spread > Spread of Avian Influenza Viruses among Birds ... Inspection Service (APHIS) bird biosecurity Web site ...
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CDC - Avian Influenza (Flu) | Influenza Viruses
CDC Centers for Disease Control and Prevention Influenza Flu Homepage ... Avian Influenza (Flu) The Virus & Its Spread > Influenza Viruses. Email this page ...
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www.sdbirdflu.com
... it is more deadly than some other bird flu viruses. ... Bird Flu is a virus spread between birds, especially migratory birds, chicken and other poultry. ...
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Bird Flu (Avian Flu)
How Does Bird Flu Spread? ... of the flu in a country where it's known that the virus is spreading, that's a ... Flu viruses can become resistant to ...
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Bird Flu (H5N1 avian influenza virus)
How is Flu Spread? Good Habits to Keep You Healthy. Bird (Avian Flu) Noroviruses (Stomach Flu) ... might promote resistance to this drug in flu viruses. ...
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Cats Can Catch and Spread Bird Flu, Study Says
A bird flu virus killed 26 people in Asia and prompted widespread slaughter of ... China Is Perfect Breeding Ground for Viruses Like SARS, Expert Says ...
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Virus Dispersion - Bird Flu
How the flu virus changes. Viruses mutate in the following two ways: ... Progress and Spread of Bird Flu. Bird Flu 101. Information for Special Groups ...
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The Online NewsHour: Bird Flu: Spread of the H5N1 Strain | PBS
In-depth Coverage of Bird Flu: Spread of the H5N1 Strain by the Online NewsHour ... if the virus H5N1 mutates into a form that is spread easily from human to human. ...
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Bird Flu FAQs
because it is more deadly than most bird flu viruses. Infected birds can spread the virus through ... to protect them from getting and spreading bird flu? ...
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Bird Flu-Symptoms
They can spread the virus to farm birds through direct contact or through ... Flu vaccines need to be updated every year because the viruses are always changing. ...
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CDC - Avian Influenza (Flu) |Spread of Avian Influenza Viruses among Birds
The first significant step towards preventing influenza was the development in 1944 of a killed-virus vaccine for influenza by Thomas Francis, Jr.. This built on work by Frank Macfarlane Burnet, who showed that the virus lost virulence when it was cultured in fertilized hen's eggs. Application of this observation by Francis allowed his group of researchers at the University of Michigan to develop the first flu vaccine, with support from the U.S. Army. The Army was deeply involved in this research due to its experience of influenza in World War I, when thousands of troops were killed by the virus in a matter of months.
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