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Britain Suspends Flu Maker's License  NEW YORK (Reuters) - The British government has suspended  the manufacturing license of Chiron Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CHIR.O target=/stocks/quickinfo/fullquote"&gt;CHIR.O&lt;/A&gt;, which makes  nearly half the U.S. supply of flu vaccine, cable television  station CNBC said on Tuesday. 