Antigenic drift is the process by which influenza virus varies genetically in minor ways year to year due to point mutations in surface genes.
La deriva antigénica es el proceso por el cual el virus de la gripe varía genéticamente de forma menor año tras año debido a mutaciones puntuales en genes de superficie.
| Front | The process by which influenza virus varies genetically in minor ways from year to year. Point mutations in viral genes cause small differences in the structure of the viral surface antigens |
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| Back | antigenic drift |
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