Pfizer: Early data shows vaccine is more than 90% effective

Drug makers and research centres around the world are in a frenzied race to develop Covid-19 vaccines. One of the teams has announced its drug is 90 percent effective, raising hopes of an end to the worst pandemic in a century. Semir Sejfovic has the details on this promising development. Vaccines for Coronavirus 💉 👉 http://trt.world/16gx #coronavirusvaccine #pfizer #pfizervaccine