Influenza Vaccine
Introduction
The influenza vaccine is a highly controversial vaccine, and has several unique qualities that make it an especially interesting topic of research.
Vaccines work by exposing the body to the right antibodies to fight a particular disease. (more about how vaccines work)
But, the influenza virus is a rapidly evolving pathogen. The virus evolves enough from season to season that a new dose of the vaccine is necessary every year, as last year's antibodies usually can not recognize this year's strain. See antigenic drift section.
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Implications of the evolution of the influenza virus
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Section 2
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Conclusion
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References
Edited by [Author Name], student of Joan Slonczewski for BIOL 116 Information in Living Systems, 2013, Kenyon College.