News today - AstroZeneca are already manufacturing a Coronavirus vaccine.
Although the vaccine still needs to pass clinical trials and then an independent review of the results, AstroZeneca are already manufacturing in UK, Europe and India. Plan is to have millions of doses by later in the year, and 2 billion by mid-2021. Although it is not 100% certain the vaccine will work, they have to gear up now in order to meet demand should it be effective.
See an article here: https://www.dailymail.co.uk/news/article-8391769/AstraZeneca-manufacturing-Covid-vaccine-three-countries.html