MedImmune Nasal Swine Flu Vaccine Recalled
MedImmune has a issued a recall of its nasal swine flu vaccine because it may have lost potency.
The recall involves 13 lots of the company’s nasal spray monovalent H1N1 flu vaccine distributed throughout the U.S. The lot numbers involved in this recall can be viewed online here.
People who received a swine flu vaccine from one of these lots do not need to be revaccinated, MedImmune said. The vaccine potency is only slightly below what it is supposed to be. The vaccine in these lots is still expected to be effective in stimulating a protective response.
Most of the recalled swine flu vaccine was given out in October and November, and would have been fully potent then. About 300,000 doses are left in warehouses. MedImmune is recalling the unused doses.
