New Delhi, Feb. 16 -- Union Health Minister Harsh Vardhan said on Monday that 18-19 potential vaccines against novel coronavirus were in different stages of clinical trials, adding that vaccination of around 27 crore Indians above the age of 50 will begin three weeks from now. "Some are in Phase I, some in Phase II, and a few approaching Phase III of the clinical trials. We are elated to have a huge portfolio in the near future," he said at a press conference here. The Minister said that the Department of Biotechnology had been provided a budget of Rs 900 crore for the development of potential vaccines against Covid-19. "The money has been kept aside for the department for use in research and development of potential vaccine candidates ag...