| http://www.w3.org/ns/prov#value | - The CDC recommended in 2004 that children six to 23 months of age receive the flu vaccine each year, and in 2003, it approved the first live attenuated influenza vaccine licensed for five- to 49-year-old persons.96 As late as the 2004-2005 flu season, however, two types of influenza vaccines were still on the market: some contained thimerosal as a preservative, and some were preservative-free.
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