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WASHINGTON, Dec. 3, 2015 � It’s time to fend off the flu, and millions are getting their shot to defend against this year’s predicted strains. The latest Speaking of Chemistry episode highlights recent research that might make this annual tradition more effective and less frequent. Speaking of Chemistry’s Sophia Cai explains the chemistry behind a shot that could keep you from getting the flu for years to come. Check it out here: .

Speaking of Chemistry is a production of Chemical & Engineering News, a weekly magazine of the American Chemical Öйú365betÖÐÎĹÙÍø. The program features fascinating, weird and otherwise interesting chemistry topics. Subscribe to the series at and follow us on Twitter .