Some H1N1 vaccine to expire next week
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The expiration date for Sanofi Pasteur's 2009 H1N1 influenza vaccine in pre-filled syringes has been moved up to Feb. 15, 2010, the CDC announced last week.
The expiration date is being changed to ensure that the vaccine meets potency standards, according to the CDC. The vaccine does not pose any safety concerns and people who received vaccine from the lots with shortened shelf life do not need to take any action. The lots had previous expiration dates ranging from March to June 2011. The change does not include Sanofi Pasteur's 2009 H1N1 influenza vaccine in multi-dose vials. A full list of affected vaccine is online.