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avian influenza
(redirected from Bird influenza)

   Also found in: Medical, Wikipedia 0.01 sec.
avian influenza: see influenza influenza or flu, acute, highly contagious disease caused by a virus; formerly known as the grippe. There are three types of the virus, designated A, B, and C, but only types A and B cause more serious contagious infections.
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bird flu

 or avian influenza

viral respiratory disease, mainly of birds including poultry and waterbirds but also transmissible to humans. Symptoms in humans include fever, sore throat, cough, headache, and muscle aches. Severe infections can result in life-threatening complications such as pneumonia and acute respiratory illness. The first known human cases occurred in Hong Kong in 1997, resulting in six deaths. Deadly outbreaks among poultry in several countries in eastern and central Asia between 2003 and mid-2005 were accompanied by more than 100 human cases, about half of them fatal. The causative agents are virus subtypes related to the human influenza type A viruses, the most virulent and contagious being the H5N1 subtype. A specific protective vaccine for this virus remains to be developed. Studies suggest that some antiviral drugs that work against human influenza may be effective in treating bird flu in humans.



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Bird Influenza Virus (3) Bird flu can jump directly to humans.
Domesticated birds may serve as important intermediate hosts for the transmission of wild bird influenza viruses to humans, as may swine, as evidenced by recent human infections with swine influenza virus A (H1N1) on multiple continents.
The emergence of the virus, a new strain that has combined human, swine and bird influenza, set off fears of a global pandemic, despite a relatively low death toll.
 
 
 
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