When will Covid-19 vaccine come in action, answers US Dr Amitesh

Senior virologist of the University of California Dr. Amitesh Anand answered the question about when will the vaccine of coronavirus come in action? How many more days India need to stay in lockdown? How much the anti-malaria drug Hydroxychloroquine is effective in combating COVID-19? Watch the video to know Dr Amitesh's take on all such questions.