Difference between revisions of "Drift"
Jump to navigation
Jump to search
(Wikilinking mutation) |
|||
| Line 1: | Line 1: | ||
| − | '''Drift''' is a process in which [[influenza]] [[virus]] undergoes mutation. The amount of change can be subtle or dramatic, but eventually as drift occurs, a new variant strain will become dominant. This process allows influenza viruses to change and re-infect people repeatedly through their lifetime and is the reason influenza virus strains in vaccine must be updated each year. | + | '''Drift''' is a process in which [[influenza]] [[virus]] undergoes [[mutation]]. The amount of change can be subtle or dramatic, but eventually as drift occurs, a new variant strain will become dominant. This process allows influenza viruses to change and re-infect people repeatedly through their lifetime and is the reason influenza virus strains in vaccine must be updated each year. |
==Sources== | ==Sources== | ||
Revision as of 03:32, January 31, 2008
Drift is a process in which influenza virus undergoes mutation. The amount of change can be subtle or dramatic, but eventually as drift occurs, a new variant strain will become dominant. This process allows influenza viruses to change and re-infect people repeatedly through their lifetime and is the reason influenza virus strains in vaccine must be updated each year.