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Avian Influenza Backgrounder
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Category : Health » Avian Influenza
Avian influenza (AI) is caused by a type A Orthomyxovirus. . Avian influenza viruses may be of low pathogenicity (LPAI) or high .
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Causative agent Avian influenza (AI) is caused by a type A Orthomyxovirus. Multiple serotypes (strains) of the AI virus exist and are classified based on relative numbers of hemagglutinin (H) and neuraminidase (N) surface antigens (e.g., H7N2, H5N1). Avian influenza viruses may be of low pathogenicity (LPAI) or high pathogenicity (HPAI) in birds. Most AI virus strains are LPAI and typically cause no to few clinical signs in infected birds. Low pathogenicity AI virus strains, however, are capable of mutating under field conditions into HPAI viruses, and some highly virulent strains of AI have evolved from milder strains after serial passage through poultry populations.
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Avian Influenza
category Health » Avian Influenza
The risk from avian influenza is generally low to most people because the viruses . several subtypes of avian influenza infection have been reported since 1997. .
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Avian Influenza Backgrounder
category Health » Avian Influenza
Avian influenza AI is caused by a type A Orthomyxovirus. . Avian influenza viruses may be of low pathogenicity LPAI or high .
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Avian Influenza Brochure
category Health » Avian Influenza
LPAI or quot low path quot avian influenza naturally oc . HPAI or quot high path quot avian influenza is often fatal. in chickens and turkeys. .
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Avian Influenza Migratory Birds Fact Sheet Update
category Health » Avian Influenza
HEALTH FROM AVIAN INFLUENZA There are new reports of highly . H5N1 avian influenza in Southeast Asia resulted from contact with domestic poultry and or .
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Information About Avian Influenza Bird Flu And Avian Influenza A H5N1 Virus
category Health » Avian Influenza
Avian influenza is an infection caused by avian bird influenza flu viruses . Information about Avian Influenza Bird Flu and Avian Influenza A H5N1 Virus
