Acrobat X Files

Home > Health > Virus Diseases

An Early Detection System for Highly Pathogenic H5N1 Avian ...

Sort Desciption:

highly pathogenic avian influenza (HPAI) both in response to disease outbreaks in wild .... influenza will not be the cause of most of the mortality events ...

Content Inside:

An Early Detection System for Highly Pathogenic H5N1 Avian Influenza in Wild Migratory Birds U.S. Interagency Strategic PlanPage 13/14/06 1An Early Detection System for Highly Pathogenic H5N1 Avian Influenza in Wild Migratory Birds U.S. Interagency Strategic Plan Introduction Avian influenza (AI) is a type A influenza virus that is naturally found in certain species of waterfowl and shorebirds. However the occurrence of highly pathogenic avian influenza (HPAI) subtype highly pathogenic H5N1 avian influenza has raised concern regarding the potential impact on wild birds domestic poultry and human health should it be introduced into the United States (U.S.). Numerous potential routes for introduction of the virus into the U.S. exist including illegal movement of domestic or wild birds contaminated products via an infected traveler as a bioterrorism event and the migration of infected wild birds. This plan focuses primarily on the detection of a potential introduction of highly pathogenic H5N1 avian influenza virus by migratory birds. Avian influenza viruses are classified on the basis of two proteins hemagglutinin (H) and neuraminidase (N) found on the surface of the virus. Specific viral subtypes have one of 16 different H proteins and one of 9 different N proteins resulting in 144 possible combinations or subtypes based on this classification scheme. Within each subtype there are numerous combinations of genetic sequences that determine the pathogenicity of the subtype to an infected host. Wild birds in particular certain species of waterfowl and shorebirds are considered to be the natural reservoirs for all 144 subtypes. These subtypes are adapted to survive in these wild species and usually cause little or no disease. However gradual genetic drift (i.e. mutation) can occur and a particular subtype can become adapted to infect other species of wild birds and domestic birds. Although this slight genetic change in the virus allows it to infect new speci ...

Source: www.doi.gov

 

Related Files

Highly Pathogenic Avian Influenza

Filed under: Health and Virus Diseases
which are usually carried asymptomatically by wild birds cause only mild disease in. poultry. Others the highly pathogenic avian influenza (HPAI) viruses ...

Highly Pathogenic Avian Influenza (HPAI): Interim Infection ...

Filed under: Health and Virus Diseases
Highly pathogenic strains of avian influenza virus for example H5N1 have. crossed from birds to humans and are known to cause fatal disease. ...

ATTACHMENT 2

Filed under: Health and Virus Diseases
to determining a cause of death disease investigation specialists provide useful ... highly pathogenic avian influenza (HPAI) both in response to disease ...

Fact Sheet

Filed under: Health and Virus Diseases
serious disease or mortality in domestic poultry yet low pathogenic H5 and H7 ... Highly pathogenic cause severe clinical signs and/or high mortality in ...

What You Should Know About Highly Pathogenic Avian Influenza (HPAI)

Filed under: Health and Virus Diseases
The strain causing concern is highly pathogenic and the disease it causes is currently called HPAI. Should one be concerned about contracting avian ...