Drug industry heavyweights and not-so-well-known biotech firms are pushing to create a COVID-19 vaccine, and thousands of people have signed up to take part in clinical drug trials, despite the hazards. But what are the technical, ethical and political obstacles to coming up with an effective and safe vaccine quickly? Martha Teichner reports. Source
According to copyright-related laws, copy any of our content for publication should indicate the source and link of us, such as:"source: NCOV Live Update", otherwise we have the right to hold accountable.