BRIEF-Sanofi CEO comments Q2 results on conference call
July 31, 2014 at 01:35 AM EDT
July 31 (Reuters) - Sanofi SA Chief Executive Chris Viehbacher tells reporters: * Expects vaccines business to return to double-digit growth in H2 * "Could imagine" U.S. launch of cholesterol drug alirocumab in H2 2015,