Potential coronavirus vaccine being tested in Germany could 'supply millions' by end of year

A German company working with US pharmaceutical giant Pfizer has begun human trials of a potential Covid-19 vaccine that could supply millions by the end of the year, according to the two firms. Pfizer says it will begin testing the experimental vaccine in the United States as early as next week, and says a vaccine could be ready for emergency use in the fall, the Wall Street Journal reported on Tuesday. CNN