is to establish how effective is this vaccine do you need one dose or two doses to be protective and once you ve been injected or vaccinated with this how long does up touch last is while. the world health organization is currently considering sending five additional unlicenced of all the drugs to the t r c some have criticized authorities of being too eager to prove the use of experimental drugs but the central african country now facing its ninth of all the outbreak seems unlikely to turn down the opportunity to curtail another crisis. to french open tennis now in paris where all of the big names managed to navigate the second round on tuesday caroline wozniacki had an easy day the australian open champion blasted her way past georgina garcia in straight sets meantime germany is world number three alexander swear i ve had a bigger challenge fighting back to beat dusan lodge of it in five sets and reached