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Avian Influenza

Orthomyxoviridae

QuestionAnswer
Synonym: Fowl Plague
There are 3 places where lesions are found characteristically: Respiratory, Enteric, and/or Nervous System
Zoonosis: Yes, some strains are!
More virulent for chickens than turkeys: A/chicken/Scotland/59
More virulent for turkeys than chickens: A/turkey/Ontario/7732/66
Hosts: many avian species and TURKEYS more often than chickens
Reservoir hosts: Migratory water fowl, especially DUCKS
Transmission: Aerosolization. Ingestion of contaminated water or feed with feces
Sites of replication: Respiratory and intestinal tracts
Highly virulent strain (Highly Pathogenic Avian Influenza A virus [HPAI])causes: Viremia. Myocarditis, Encephalitis, and Myositis caused by multifocal lymphoid and visceral necrosis
Neutralizing antibodies are detectable how soon? What is another name for them? Withing a couple days after the onset of the disease and can last for 18 months. Hemagglutination Inhibition Abs
Clinical signs: Blood-stained oral and nasal discharges. Combs and wattles are cyanotic. Airsacculitis. Drop in egg production and quality of the egg. Morbidity and Mortality rates vary depending on the virulence of the strain
2 Methods for control of the virus: Quarantine & Eradication.
What are sentinel birds used for? How long to wait between slaughter and repopulation when eradicating the virus
Vaccines? NONE
Created by: lkollmeier