Flu Vaccine a Good Match for Viruses This Year Posted from: http://www.webmd.com/cold-and-flu/news/20170216/flu-vaccine-a-pretty-good-match-for-viruses-this-year-cdc?src=RSS_PUBLICOverall, it has been 48 percent effective, but more severe H3N2 strain a factor in reduced coverageFacebookTwitterGoogle+