'Milestone' reached as world edges closer to vaccine

The first effective coronavirus vaccine has been developed by American pharmaceutical giant Pfizer and German technology company BioNTech, it is being widely reported in the media. The revolutionary new RNA vaccine technology, which has been tested on 43,500 people in six countries and has no safety concerns so far, is more than 90% effective, trails have shown. Of the dozen or so vaccines in the final phase 3 stage testing, this is the first to show results and the developers plan to apply for emergency approval to use the vaccine by the end of the month. Two doses, three weeks ap...