Difference between revisions of "Drift"
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| − | '''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== |
[http://fhp.osd.mil/aiWatchboard/glossary.jsp?letter=D DOD Pandemic Influenza Watchboard] | [http://fhp.osd.mil/aiWatchboard/glossary.jsp?letter=D DOD Pandemic Influenza Watchboard] | ||
[[Category:Medicine]] | [[Category:Medicine]] | ||
Latest revision as of 11:47, July 13, 2016
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.
