Adam Kleczkowski, University of Strathclyde Pfizer and BioNTech have just released interim results of their COVID-19 vaccine trial. Although it is not the only vaccine in the late stages of testing, the large size and careful design of the trial, not to mention the promising results, have caused understandable enthusiasm around the world. As we … Continue reading COVID-19 vaccines are coming – how will we know they work and are safe?