Influenza vaccine: Difference between revisions
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''' [[Influenza vaccine description|Description]]''' | ''' [[Influenza vaccine description|Description]]''' | ||
'''| [[Influenza vaccine clinical pharmacology|Clinical Pharmacology]]''' | '''| [[Influenza vaccine clinical pharmacology|Clinical Pharmacology]]''' | ||
'''| [[Influenza vaccine indications and usage|Indications and Usage]]''' | '''| [[Influenza vaccine indications and usage|Indications and Usage]]''' | ||
'''| [[Influenza vaccine contraindications|Contraindications]]''' | '''| [[Influenza vaccine contraindications|Contraindications]]''' | ||
'''| [[Influenza vaccine warnings and precautions|Warnings and Precautions]]''' | '''| [[Influenza vaccine warnings and precautions|Warnings and Precautions]]''' | ||
'''| [[Influenza vaccine adverse reactions|Adverse Reactions]]''' | '''| [[Influenza vaccine adverse reactions|Adverse Reactions]]''' | ||
'''| [[Influenza vaccine dosage and administration|Dosage and Administration]]''' | '''| [[Influenza vaccine dosage and administration|Dosage and Administration]]''' | ||
'''| [[Influenza vaccine how supplied|How Supplied]]''' | '''| [[Influenza vaccine how supplied|How Supplied]]''' | ||
Revision as of 14:35, 9 January 2014
For patient information, click here.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohamed Moubarak, M.D. [2]
Overview
The Influenza vaccine or flu shot is a vaccine to protect against the highly variable influenza virus.
The annual flu kills an estimated 36,000 people in the United States. The annually updated trivalent flu vaccine for the 2007–2008 season consists of hemagglutinin (HA) surface glycoprotein components from influenza H3N2, H1N1, and B influenza viruses.[1]
Each year the influenza virus changes and different strains become dominant. Due to the high mutability of the virus a particular vaccine formulation usually works for only about a year. The World Health Organization coordinates the contents of the vaccine each year to contain the most likely strains of the virus to attack the next year. The flu vaccine is usually recommended for anyone in a high-risk group who would be likely to suffer complications from influenza.
Category
US Brand Names
FLUBLOK®
FDA Package Insert
Description | Clinical Pharmacology | Indications and Usage | Contraindications | Warnings and Precautions | Adverse Reactions | Dosage and Administration | How Supplied | Labels and Packages
Mechanism of Action
Flublok contains recombinant HA proteins of the three strains of influenza virus specified by health authorities for inclusion in the annual seasonal vaccine. These proteins function as antigens which induce a humoral immune response, measured by hemagglutinin inhibition antibody (HAI).
Antibodies against one influenza virus type or subtype confer limited or no protection against another. Furthermore, antibodies to one antigenic variant of influenza virus might not protect against a new antigenic variant of the same type or subtype. Frequent development of antigenic variants through antigenic drift is the virologic basis for seasonal epidemics and the reason for the usual replacement of one or more influenza virus strains in each year's influenza vaccine. Therefore, influenza vaccines are standardized to contain the hemagglutinins of influenza virus strains (i.e., typically two type A and one type B), representing the influenza viruses likely to be circulating in the U.S. in the upcoming winter.