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Influenza A virus subtype H5N1
hideInfluenza A virus subtype H5N1, also known as "bird flu," A(H5N1) or simply H5N1, is a subtype of the Influenza A virus which can cause illness in humans and many other animal species. A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu, commonly known as "avian influenza" or "bird flu". It is enzootic in many bird populations, especially in Southeast Asia. One strain of HPAI A(H5N1) is spreading globally after first appearing in Asia. It is epizootic (an epidemic in nonhumans) and panzootic (affecting animals of many species, especially over a wide area), killing tens of millions of birds and spurring the culling of hundreds of millions of others to stem its spread. Most references to "bird flu" and H5N1 in the popular media refer to this strain.
According to the FAO Avian Influenza Disease Emergency Situation Update, H5N1 pathogenicity is continuing to gradually rise in endemic areas but the avian influenza disease situation in farmed birds is being held in check by vaccination. Eleven outbreaks of H5N1 were reported worldwide in June 2008 in five countries (China, Egypt, Indonesia, Pakistan and Vietnam) compared to 65 outbreaks in June 2006 and 55 in June 2007. The "global HPAI situation can be said to have improved markedly in the first half of 2008 [but] cases of HPAI are still underestimated and underreported in many countries because of limitations in country disease surveillance systems".
For more information about Influenza A virus subtype H5N1, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with bird flu
New research helps explain why bird flu has not caused a pandemic
Nov 19, 2009 |
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(PhysOrg.com) -- Bird flu viruses would have to make at least two simultaneous genetic mutations before they could be transmitted readily from human to human, according to research published today in PLoS ON ...
WHO: nearly 5,000 swine flu deaths worldwide
Oct 23, 2009 |
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(AP) -- Nearly 5,000 people have reportedly died from swine flu since it emerged this year and developed into a global epidemic, the World Health Organization said Friday.
HIV's ancestors 'plagued first mammals'
Other Sciences / Archaeology & Fossils
Sep 18, 2009 |
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(PhysOrg.com) -- The retroviruses which gave rise to HIV have been battling it out with mammal immune systems since mammals first evolved around 100 million years ago - about 85 million years earlier than ...
U.S. races to get millions of swine flu doses ready
Medicine & Health / Medications
Sep 08, 2009 |
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In a contest that pits human against virus, the U.S. government is evaluating the safety and effectiveness of swine flu vaccine in hopes of having millions of doses ready for use before the next wave of the pandemic H1N1 ...
Single flu dose or two? Why doctors aren't sure
Sep 02, 2009 |
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(AP) -- Why do scientists warn it may take two doses of vaccine to protect against swine flu when one dose is the norm in a regular flu season? Blame your naive immune system.
Bird flu leaves the nest -- adapting to a new host
Aug 26, 2009 |
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Current research suggests that viral polymerase may provide a new therapeutic target for host-adapted avian influenza. The related report by Gabriel et al, "Spread of Infection and Lymphocyte Depletion in Mice Depends on ...
Swine flu detected in Chilean turkeys: vets
Aug 21, 2009 |
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An outbreak of swine flu has been detected in two turkey farms in Chile, government veterinary services in the country said.
Words matter in public health
Aug 07, 2009 |
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Giving people a sense of being in control is an important element in health messages, according to researchers at Nottingham and De Montfort universities. The research, which was funded by the Economic and Social Research ...
Taiwan scientists unveil new weapon in swine flu fight
Jul 21, 2009 |
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Taiwanese scientists said Tuesday they had developed an organic compound which could help control the global swine flu epidemic as the worldwide death toll from the disease passed 700.
A New Way of Treating the Flu
Jul 06, 2009 |
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(PhysOrg.com) -- What happens if the next big influenza mutation proves resistant to the available anti-viral drugs? This question was presenting itself to scientists and health officials recently at the World ...
A New Way of Treating the Flu
Medicine & Health / Medications
Jun 13, 2009 |
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What happens if the next big influenza mutation proves resistant to the available anti-viral drugs? This question is presenting itself right now to scientists and health officials this week at the World Health ...
Bird flu virus remains infectious up to 600 days in municipal landfills
May 27, 2009 |
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Amid concerns about a pandemic of swine flu, researchers from Nebraska report for the first time that poultry carcasses infected with another threat — the 'bird flu' virus — can remain infectious in municipal ...
HIV's march around Europe mapped
Medicine & Health / HIV & AIDS
May 20, 2009 |
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Those travelling abroad should take seriously advice to pack their condoms and keep their needles to themselves: research published today in the open access journal Retrovirology shows that tourists, travel ...
Glaxo offers WHO 50 million pandemic vaccines
Medicine & Health / Medications
May 19, 2009 |
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(AP) -- Drug giant GlaxoSmithKline said it has offered to donate 50 million doses of a pandemic vaccine to the World Health Organization in the event of a global flu outbreak, according to a company spokesman.
A new way of the treating the flu: Approach targets both the H and N portions of the virus
May 19, 2009 |
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(PhysOrg.com) -- What happens if the next big influenza mutation proves resistant to the available anti-viral drugs? This question is presenting itself right now to scientists and health officials this week ...
