An experimental vaccine against dengue, the world’s most common mosquito-borne virus, was 100 percent effective in early trials and could speed up the pace of a vaccine against Zika, researchers said Wednesday. Dengue — which is in the same family of flaviviruses as Zika — infects some 390 million people each year in more than … Continue reading Dengue Virus Vaccine Is 100 Percent Effective: Study