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本文是对即将到来的北半球流行季节(2009年11月～2010年4月)流行性感冒(流感)疫苗组份的推荐。南半球流行季节(2010年5～10月)流感疫苗组份在2009年9月推荐。赤道地区国家的流感流行因素将影响其
This article is a recommendation for the upcoming influenza (influenza) vaccine component of the Northern Hemisphere during the popular season (November 2009-April 2010). Southern Hemisphere epidemic season (May to October 2010) influenza vaccine components recommended in September 2009. Influenza epidemic in equatorial countries will affect it