Influenza Virus Facts

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Influenza A virus Infects multiple hosts – aquatic (grab rest from crhsis) Influenza A naming Virus type – origin – strain number - year of isolation – virus subtype Influenza C – infects pigs and humans Almost excuslisvng a human pathogen B and C Causes mild illness and may causes local epidemeics Antigenic drift – RNA dependent RNA polymerase No proofreading function Highly error prone 1 – every 10 000 nucleotides 1 errror each new virion = mutant viruses andDRIFT slight mutant change occurs in influenza A B C Antigentic Shift Reassortment event 2 different viruses or strains that ocme togethert to form a new viral subtypre occur sonly with flu A – result of large host rane – great chance of combo results in…show more content…
– antiobody test. Culture most except VZV and CMV – dying field to cultutre Table – chris’s notes Therapry and prevemtion Available for HSV VZV CMV =- HSV 6 Acicolvir and ganciclovir Vaccination Chickenpox vaccine and zoster vaccine Used in prevention and post exposure Hepatitis Inflammation of the liver Inflammatory Infective Metabolic Toxin including alcholhol Ischemic - all these different type of Presentation Actute – synptoms sprectirum opf illness 10 days – 6 weeks Sprecturm totally well tot toally liver failure Or Chronic >6 months sprectrum of liver damage from mild to cirrhosis. Symptoms signs an dlab tests Symptoms Fatigue nausea fever Signs JAUNDICe LFTS tests – bilirubin ALT and AST Ratio AST / ALT >2 suggestive of alcohol Most are present with acture deisease with chronic disease dependent on extent of damge, cirrhosis and decompenstation. Viral Hepatitis Term denoting inflammation of the liver due to infection with one of the 5 hepatotropic viruses HAV HBV HCV HDV HEV - belong to 5 different families Other viruses: Herpes viruses – HSV EBV CMV

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