Having trouble viewing this email? | View it in your browser   This year's vaccines reduce flu cases by about one third, but effectiveness against the most common strain causing the most misery is lower. FOR MORE ON THIS STORY, GO TO:   USATODAY.COM   You are currently subscribed to this newsletter with the address: newsletter@newslettercollector.com. To UNSUBSCRIBE please click here.     Manage Subscriptions | Help | Advertise | Home Delivery | Privacy Policy - Your California Privacy Rights     © 2017 USA TODAY, a division of Gannett Satellite Information Network, LLC. 7950 Jones Branch Drive, McLean, VA 22108