Covid-19: Why a vaccine is likely by end of 2020

Human safety trials of a coronavirus vaccine developed by Oxford University began on Thursday even as Indian company Serum Institute of India started work on making the vaccine locally so as to be ready in case the trial succeeds. The trial began in Oxford on Thursday, with the first two of 800 healthy volunteers recruited for the study being injected with a new vaccine, ChAdOx1 nCoV-19 . This is the sixth coronavirus vaccine to enter the first phase of clinical trials, raising hopes of an antidote against the virus that continues to ravage the world. If the trials are a success, scientists hope to have one million doses ready by September, and to dramatically scale up manufacturing after that.