"Flu viruses are constantly changing so it's not unusual for new flu virus strains to appear each year. For more information about how flu viruses change, visit How the Flu Virus Can Change www.cdc.gov/flu/about/viruses/change.htm.
Last reviewed on RxList: 5/7/2015
This monograph has been modified to include the generic and brand name in many instances.
Additional Flublok Information
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