HHS Buys 'Experimental' Glaxo Flu Vaccine  WASHINGTON (Reuters) - U.S. health officials on Tuesday  approved the importation of up to 4 million doses of influenza  vaccine made by GlaxoSmithKline &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=GSK.L target=/stocks/quickinfo/fullquote"&gt;GSK.L&lt;/A&gt; &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=GSK.N target=/stocks/quickinfo/fullquote"&gt;GSK.N&lt;/A&gt;, bringing the  U.S. total to 65 million vaccines for this flu season.