Is there light at the end of the tunnel? Three different researchers have announced potential Covid-19 vaccines that are over 90% effective. (Subscribe: first there was the Pfizer vaccine in Germany, then a few days later Russian researchers said they got similar results, and now there’s the American Moderna team as well. also another vaccine in development at the University of Oxford, which is about 70 -90% effective. But there are many that pose valid questions about safety, especially given the enormous rush that there have been to develop these vaccines. Let’s break the facts and see why we really need a vaccine, who is trying to make it and if people will take one to make it work. ——- Watch more of our series of explanations here – Get more news on our site – Follow us: Facebook – Twitter -.