<http://schema.org/description>
"The U.S. Food and Drug Administration approved the influenza vaccine formulation of three strains for the 2011/2012 flu season."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2011/07/25/Three-strains-for-flu-vaccine-chosen/UPI-19451311566772/?rel=93441335525650>